What did the Prophet’s (pbuh) Grandson give his life for at Karbala?

Courtesy: http://en.wikipedia.org/wiki/File:Kerbela_Hussein_Moschee.jpg

Moharram 10 is a day of Great Symbolism: Imam Hussain gave his life on 10th Mohurram to oppose tyranny & brute force.

In the year 61 of the Islamic calendar, Prophet Muhammad’s, pbuh, grandson Hussain, r.a., was surrounded by a tribal army from Kufa which wanted to force him to owe allegiance to, Ziyad,  the Governor of Kufa and to the tyrant Yazeed.
Hussain, r.a., and the 72 blessed people who were with him went down fighting to the end.

The message of this tragic event is that Muslims must not accept rulers who are tyrants. Allegiance is immoral if it is based on brute force. 
Today Israel is trying to force Palestinians to accept allegiance to the Zionist terrorist entity, which like Yazeed’s regime is an illegitimate entity.

Imam Hussain never taught Muslims to beat their chests and to weep and mourn and carry out abuse of other Muslims. He did not even mourn his father, Ali’s, r.a,, murder or that of Usman, r.a, in this unusual manner. Such activities are forbidden in Islam.
Today’s Yazeed is Israel. Today’s Yazeed are the occupiers of Afghanistan and Kashmir and Chechnya. Today’s Yazeed are the murderers who let loose drone strikes on Islamic people in Pakistan, Yemen and Somalia 

Where is today’s Hussain, r.a.?

Is there no one like Hussain (R.A.) today?  

Why?