The crime they commit and the way they treat women. There have been people trying to enforce Sharia, in France there were teachers beheaded for criticising Mohammed, there were riots in Sweden over burning a book. Riots between Indians and Pakistanis. Behaviour like this just doesn’t belong in our society. Of course there are plenty of migrants who do behave and they are very much welcome, but we do have to be careful about who we’re letting in.