Karbala is a city in Iraq. It was also the place of an important battle in Islamic history between Imam Hussain (the grandson of the Prophet Muhammad) and Yazid. Hussain had only 72 companions with him versus Yazid's thousands of trained warriors. In the aftermath, Hussain's army was slaughtered. Imam Hussain's sacrifice for justice and truth is looked upon and adored by many around the world. The event is held in high esteem among the Shia and is commemorated every year during Ashura.
Shia person: have you heard heard of the battle of karbala?
Sunni: no, i dont think i have..
Shia: wow..do i got a story for you