If the fanatics anti-Islam elements were only targeting shias than your logic may have been understandable. But they kill ANYONE who disagrees with them in ANYWAY. For example, killing of Sunni Tehreek leaders in Karachi. How will you justify those killings?
It is obvious that these fitna-mongers will kill shias/other-minorities/anyone-who-disagrees-with-their-brand-of-Islam no matter WHAT.
These anti-Islam terrorists are a threat to Pakistan and its security, and cause bad name to Islam everywhere.
Killing anybody who disagrees with you is definately wong but you failed to see the logic of what i said leme provide you another example :
Say** "I - a Muslim is living in a highly conservative christian society for instance in South America , Mexico or the bible belt of USA now..........disagreeing with them is one thing and swearing at Jesus and Paul would be another"**
Now, if i am dumb...and I don't do risk anaylsis... ...and start insulting Jesus and Catholic saints.....the chances are that i will get a kick on my ** S.**
PS : Disagreeing and insulting /cursing/swearing are different!
I hope this example has cleared the confusion
Thanks