Artist using their medium to express their feelings.Through the painting a painter communicating with the people same as this cartoonist express his feeling.I think he have that freedom to express his self.Now a days people want to be famous for that they will do anything.
through this cartoon he want to convey what ? prophet is a terrorist or sponsor of terrorism ?.If it is his view about Islam.We should welcome him.We will ask him why he have such an opinion ?.we should communicate with him.We will try to change his view.That is the way that Prophet shows us.

"A man can be destroyed but not defeated"