The legal line, I think, is once a speaker goes beyond insults and causes demonstrable harm to another person. So defamation crosses the line. Causing a person

The legal line, I think, is once a speaker goes beyond insults and causes demonstrable harm to another person. So defamation crosses the line. Causing a person to feel offended does not. It could be argued that going out of your way to caricature a religious group is unethical. But it is legal (that is, should be allowed in a free society). In either case responding with violence to a personal insult barbaric and unjustifiable. One can always read different magazines, watch different videos, etc.