The motive of karbala was made very clear by imam hussain(a), he in his letter to his brother muhammad hanafiya(a) said that, I am not rising up our of arrogance or pride nor do I have any greed for power,  fame, money, any personal gain, for sake of seizing property or any kingship but for the reformation of the ummah of prophet(s), I want to enjoy good and forbid evil, I want to follow and revive the way of my grandfather(s) and father(a)! This is the essence of his movement and this is the ashura! Why do we commemorate ashura every year again and again? Is it for the oppression imam hussain(a) faced? Is it for shahadat of imam hussain(a)? No thats not a complete truth! We commemorate ashura to revive and make people aware of imam hussain’s(a) selfless reformation of this ummah! The reason why each and every imams(a) have emphasised so much upon commemoration of ashura and muharram is for keeping this reformation alive! Every year we commemorate muharram to keep imam hussain’s will alive among our people, although imam hussain(a) as a person is not among us but He(a) is alive between each and everyone or us as a symbol of humanity! Karbala teaches us to be just! To spread unity! To stand against Batil! The essence of karbala is to enjoin good and forbid evil which is unfortunately not found in our youths today.