Fake news perpetuates the hatred. Those links your contacts on FB send that reportedly state extreme facts are usually spurious news, and then you have to ask yourself about that contact and their thinking capability.
Ignorance plain and simple! These are the type of people that complain foreigners are taking all their jobs. All the while kicking back in their council houses, smoking roll up after roll up watching their 50 inch tvs chugging special brew and watching Jeremy Kyle!