Offended but law-abiding armed Muslims are fine. (and I think some of the EDMD cartoons were offensive, and if I were a Muslim, more of them would be offensive to me).

Non-law-abiding potential-assassins aren't going to have difficulty becoming non-law-abiding armed potential-assassins. Armed but historically fairly incompetent assassin vs. somewhat trained, alert, armed target has a lot better odds for her than vs. an unaware target. She would get more value out of training than the weapon itself, in that it would allow her to spot threats, but there are definitely situations where then being armed would be the best response to a threat (particularly in the hope).