I criticize Islam for terrorism the exact same reason I criticize JWS for people dying from refusing blood or pedophiles being insulated. There is no difference. Doesn't mean personally hate individual JWS, but the ideology is to blame. Jihad and all the atrocities happening around the world because of Islam are not perversions of the faith, but plausible interpretations of it.
Criticizing bad ideologies is the best example of free speech!