The author below says that the tyranny and brutality of the Islamists SHOULD be hated:
"Not all hate is improper. My hatred of the fascistic impulses of archaic shari'a law stems not from ignorance of "the other," but from knowledge. The more I learn, the more that is revealed, the stiffer my backbone becomes and the more I come to despise. This hatred is fine, as its converse would be immoral indifference.
Source
"Read the whole thing", as they say in the classics.