I was once advised by my Muslim Ninong who belongs to a prominent Muslim clan in our province.
"Never walk with an extremist Muslim in your back."
I even had a Muslim friend who was ok until he become an extremist. Ayun sumali na sa MILF.
Generally speaking Muslims are ok until they become extremist/radical.
Remember its ok for them to kill an infidel, it's written in their coran. Extremist Muslim hold on to this.
Remember one of the bombers in London. His uncle said that the kid is ok, until he become too religious. Naging extremist na pala, ayun pinasabog ang sarili nya.