In a news story about the murders, the murderers made them relevant. I think the news is less complete without an example and in that case, it is not about being tacky and rude.
HOWEVER, the demand that all of them be reprinted as a way to somehow counter the murders is just a high pressure tactic to force people into supporting something they do not choose to support. That is different. TOTALLY different. It is as anti-free speech as the demand to not print them.
Too many Americans prefer to look away from evil. In 1936 Americans celebrated the Berlin Olympics despite increasing reports of Hitlers growing oppression. Peace loving people assumed the reports couldn’t be true. We have to show the cartoons so average Americans understand what we face in our fight against Islamic terrorists. Otherwise they would never believe all those people were murdered over a silly cartoon.