The Holy Quran is replete with examples of men who stood for the truth and those who opposed it. The former sacrificed everything they had to defend the truth and the latter was ready to destroy everything around them to satiate their greed and selfishness.

The Book of Allah invites us to reflect upon personalities, nations, and events of the past. Whether it is pure men like Prophet Ibrahim (AS), Prophet Musa (AS) and Prophet Isa (AS) or evil men who opposed them and their mission like Nimrood, Firon (Pharoah), or Bani Israil, all of them have a lesson for us. These are not just stories to read and move on, they contain messages for our lives. And rightly so, we read in the Holy Quran:
"There is certainly a moral in their accounts for those who possess intellect. This [Quran] is not a fabricated discourse; rather, it is a confirmation of what was [revealed] before it, and an elaboration of all things, and a guidance and mercy for a people who have faith. (12:111)

Similarly, Imam Ali (AS) says: Learn lessons from past events for future events, because they are similar to one another. (Nahjul Balagha Letter 69)
One such incident of the past that changed the history of Islam forever, is the event of Karbala. No mention of Karbala is complete without Hurr ibn Yazid Ar-Riyahi. He is an example for those who reflect upon his journey, his actions and his martyrdom. He encourages, inspires and motivates the believers through his actions in Karbala. 

Background

Hurr literally means a freeman in Arabic, and truly so he lived up to his name. 
Hurr Ibn Yazid Ar-Riyahi was the general of the Ummayad army dispatched from Kufa, (Iraq) to intercept Imam Al-Hussain (AS), the third infallible Imam. Ubaydullah ibn Ziyad, the newly appointed governor of Kufa issued the command to guard all entrances and exits to Kufa in order to intercept al-Hussain for an oath of allegiance to Yazid. Hurr was ordered along with his 1,000 soldiers to intercept Imam Hussain(AS) and his followers before they reached Kufa.

When he intercepted Imam Hussain (AS) at Dhu Hussam, Hurr and his men had ran out of water. The Imam(AS) ordered his companions to satiate Hurr and his army, including the cavalry. Hurr and his men offered their prayers with the Imam and listened to his sermons. However, on subsequent orders from the tyrant governor of Kufa, Ubaidullah Ibn Ziyad, Imam Hussain and his family were forced to encamp in Karbala. Hurr was of the notion that the Imam (AS) will not be killed in Karbala, he would somehow persuade him to go elsewhere. But he was perturbed when he realized that Umar Ibn Sa'ad who was sent by Ubaidullah had come with orders to kill Imam Hussain. On one hand was his position, family and wealth and on the other hand was the grandson of the Holy Prophet(PBUH&HP) and the son of Imam Ali (AS) and Lady Fatima (SA), supporting whom meant a certain death. These were the two options left for Hurr, just as the Holy Quran says:
 "Indeed We have guided him to the way, be he grateful or ungrateful." (76:3). 

What do we learn from Hurr?

Despite all odds, Hurr left the Army of Yazid, joined Imam Hussain (AS) and won the honor of being the first martyr of Karbala. All the glitter of the world, his power, rank, wealth and children did not stop him from joining his master Hussain(AS). 
Ashura and Karbala were not be bound by time or geographical location. Almost 14 centuries have passes by but human beings from different parts of the world, belonging to different races and religions continue to mourn for Imam Hussain(AS) and take inspiration from him and his mission.
Just as Karbala continues to inspire us, the magnanimous personality of Hurr continues to inspire and guide us. Hurr chose good over bad, truth over falsehood, hereafter over the transient world. If we claim to be followers and lovers of Imam Hussain(AS) we need to turn towards the Hussain of our time and follow the teachings of Imam Hussain(AS). Imam Hussain(AS) gave everything he had to protect and preserve the teachings of Islam and by helping Hussain(AS) in his cause, Hurr achieved this lofty position of being Imam Hussain's(AS) helper. Thus, if Hurr truly motivates us, we need to mend our ways and make ourselves capable of helping Imam Mahdi (AJ) the true inheritor of Imam Hussain's (AS) legacy.

The Hurr of Karbala teaches us that true love is incomplete without sacrifice. 

But, is the Hurr inside us ready to listen?

References

1. A Probe into the History of Ashura, Ibrahim Ayati
    

Those who do not know Islam very well and those who follow the propaganda of the media, especially in this period of time when several terrorist attacks have been committed by pseudo-Muslim groups, which do not have anything to do with Islam, accuse Islam of encouraging violence and terror. That is absolutely wrong. Islam is the religion of peace and intrinsically promotes peace. The reasons for that will be reviewed next. 

Islam Communicates Intersubjectivity

The greatest miracle of Islam is the Quran; a Book. Books are among the most efficient and prominent means of connecting thoughts and minds. This means that Islam has chosen a very civilized way of communication with human beings; by having dialogues with them. By the means of the Quran, Islam, in the first place, deals with the thinking power of humans and then their emotions. In other words, Islam tries to communicate with people through common sense, mutual understanding, logic and reasoning which consequently prevents harshness or sudden actions caused by the outpouring of emotions. That is while “Book” and “communicating through words” did not serve like that regarding the previous divine religions [i].  

Islam Promotes Adherence to Rules and Regulations

According to Islam, one should truly believe in the Islamic principles and axioms. It means that one should accept these Islamic facts by reasoning and rational search and demonstrate his\her belief in every act and deed; otherwise, if one has not really changed his\her mind to accept Islam or accepts Islam in words but do not practice it, he\she will be a “Muslim” but not a “believer” (Mu'min). This shows that Islam educates the people who are adherent to rational and commonsensical rules and regulations and consequently prevents apostasy and chaos. 

Golden Rule[ii], promoted by Islam

Many suppose that Immanuel Kant was the first who formed and introduced the Golden Rule, a rule of ethical conduct, while this ethical code has been among the teachings of Islam since 1400 years ago. Imam Ali (AS) and other Imams (AS) have emphasized this ethical advice by words and acts and encouraged people not to consider themselves superior to others or do not prefer their benefits to others [1]. 

Imam Ali (AS) has addressed Imam Hassan (AS) as such: “What you prefer for yourself, prefer for others; what you find objectionable for yourself, treat as such for others. Don’t wrong to anyone, just as you don't like to be wronged; do good to others just as you would like others to do good to you; that which you consider immoral for others, consider immoral for yourself” [2]. There is no sign of injustice or cruelty among these words. On the contrary, this is an invitation to get along with others, to respect their preferences and not to expect too much from them. This is simply an encouragement to peace. 

Islam and Holy Struggle (Jihad)

When hearing about Jihad, the first thing that strikes to mind is Al-Qaeda, ISIS and fire, and blood. Many people think that Jihad equals aggression, but that is wrong. Jihad has a clear definition. There exist two types of Jihad in Islam: Defensive and Offensive. Defensive Jihad, as can be guessed from the name, is for the aim of defending the Islamic territory against the assaults and intrusions of outsiders and invaders.

Offensive Jihad aims at liberating people from unjust oppressive regimes and allowing them to search, read and choose the right religion and lifestyle. Many Islamic jurists believe that the Offensive Jihad to invite to Islam is only allowed under certain circumstances; i.e. in the presence of the Imams (AS) and Prophet Muhammad (PBUH&HP). Otherwise, only Defensive Jihad is permitted which is actually obligatory to all Muslims in whatever condition. No one in the whole wide world would admit that defending oneself is aggression; Neither do the Muslims. Then, it is clear that unlike a widespread thought nowadays, Islam is against war and violence.

Islam Considers the Rights of Others over One in peace

There is a theory in Islam: any harm to others or oneself is banned. It explains that a Muslim does not cause any harm to other people or do not misuse rules to cause harm to them [2]. Through this theory, Islam protects the benefits and rights of others. This includes any individual or any group of people. It also covers both Muslim and non-Muslim societies and people, hence, this theory, in fact, reinforces and advertises the peace all around the world.

One Has Rights over Him\Herself

It was explained above that Islam also bans any harm to oneself. In this regard, suicide is illegal (Haram) in Islam. Some might suppose that they own their physical body while it is a divine trust offered to us to do good deeds (16:97), worship God (51:56) and practice the religion. This is another means by which Islam promotes peace all around the world.   

Considering the Islamic approach described above in interaction with the humans, the efforts to establish ethical standards and to form the interrelationship among humans demonstrate the contribution and role of Islam to create a peaceful world.   

Notes:
 
[i] While Old Testament and New Testament are written by humans, the Quran is the divine revelation to Prophet Muhammad (PBUH).
[ii] Golden Rule is the principle of treating others as one would wish to be treated.

References:

1. Nahj al-Balaqa, Letter 31.
2. peace in islam