Nobel Prize winner Malala Yousafzai explains why Trump’s comments on Muslims are dangerous

I can just highlight one thing. The more you speak about Islam and against all Muslims, the more terrorists we create.
So it's important that whatever politicians say, whatever the media say, they should be really, really careful about it. If your intention is to stop terrorism, do not try to blame the whole population of Muslims for it because it cannot stop terrorism. It will radicalize more terrorists.

http://www.vox.com/2015/12/16/10300380/malala-trump