Priorities

Thing 1: Some Muslims might be terrorists so we should play it safe and keep all of them out.

Thing 2: Racist! Very few Muslims are actually terrorists so we are going to kill a whole bunch of them and hopefully we will blow up the ones that are terrorists in the process! We're humanitarians!

Communitiyism

The idea the internet is a basis for a more harmonious global community is ludicrous. People are predisposed to hating each other which is actually one of the reasons communities exist in the first place. Common friends have common enemies which is one of the reasons why they seek the safety of groups or "communities." in the first place.
Daily I find reasons to hate others that are far more arbitrary than factors like race or sexual orientation. I hate people I pass on the street for reasons I completely made up. It has been well-established people are not open minded and will not actively try and dispell any preconceived notions they may have, in fact, they will cling to these ideas even in the face of overwhelming and indisputable evidence to the contrary. No matter how well cataloged and chronicled facts will never settle as many arguments as violence will.