Trump is right, London mayor coincidentally feels it's erroneous to name the religious extremism of terrorism.
He's not alone, in this same forums you'll encounter those who believe the religions of peace have nothing to do with those cowardly deadly acts , just like another Canadian celebrity at the helm of the PMO, you can not name the perpetrators, just in case he will introduce 'just a motion' against islamophobia, soon to become law in the summer.
So disturbing.