Some interesting answers there, and a lot of them seem to disprove this "islam is evil" milarkyBut there's a fairly sizable portion of the Muslim population around the world (including the West) that is sympathetic to terrorists acting in the name of Islam. It's obviously a minority in most countries, but there are far more people who are supportive or at least sympathetic than .5%. Thankfully, very few of them are willing to put their feelings into actions.
http://www.pewresearch.org/files/old-assets/pdf/muslim-americans.pdf#page=97
http://imgur.com/a/WycyQ