For starters:
A- Muslims don't make anti-christian movies, videos or books - it's a FACT.
B- Muslims did not protest over an anti-muslim movie, some very few did.
C- Those few that did, did not protest over the film per se, the movie just added to a chain of many other reasons they see are offences against them(the major one is the US vetos against palestine independence).
If someone goes out and says lies about you to portray you badly in the commuity or made an ugly story about you resulting in you losing all your friends the next day and even family members start to distance themselves away from you .
Suppose you throw a pillow against the wall as an instinctive reaction to frustration or couldn't control your anger and slapped his/her face, would you care if someonce calls you "violent" and "uncivilzed" afterwards?
Point is:
IF someone thinks it is okay to deliberately anger others by degrading their most cheriched thing with lies, what is to stop the targeted group from thinking it is okay to do whatever in response.
The response is always crazier and bigger, here are 2 examples:
When the US was attaked on 9/11, it attacked iraq and afghanistan where millions of innocent people died. The first nightly strikes operation on Iraq was called "Shock and Awe" . Some right wing channels even put music to play and fancy colors as the missles of death were raining and tearing every living thing into thousands of charcoaled lifieless pieces. And if you saw it on tv, it did not dinstinguish the army from civilians, hell was let loose over the crowded city of Baghdad at night. Now bear in mind, none of the 9/11 plane hijackers were from iraq.
When United states was attacked on Pearl Harbor, they brought the war to Japanese for years to come. Even when Japan was clearly defeated and destroyed, they decided to drop nukes on Hirochima and Nakazi just to impress one man - the Japanese emperor at that time.
The human anger is uncontrollable, people are hurt and die of stupid things everyday.These things ar taken for granted we don't even care about them anymore:
A woman killed her husband out of rage for sleeping with another woman...
A poor guy went to steal something to eat but got chased and shot...
A businessman conspire to kill his competitor...
Regardless of all this negatif stuff, by far humanity is enjoying the brightest of its times compared to just few decades ago.