No terrorism in any form is acceptable.
But will non-violent Muslims ever accept a march like this along with non-violent Christians (which almost all are) and both sides suspending some dislike in the name of free speech.
Can people (be it Christians, Muslims, Buddhists, etc) put all religion aside temporarily in the name of free speech?
I don’t think it is just religious people. Outside of Muslim violence the greatest threat to freedom of speech today is progressives in the name of stopping “hate” ala lgbt etc.