This is very common among all Muslims. According to western standarts it is i.e. in the Netherlands not possible to put Muslims in lots of cases in prison, because if medical doctors check them before trial, they find, that they suffer from psychological illnesses because of birth defects. In Germany I heard about of lots of cases with the same problem.
However, ill or not ill, they are a threat and must be deported.
The funny thing about this whole issue is, that the most low, most dishonest, most savagely people on earth think they are superior to you and me althrough the whole reality is wittness for the opposite of their claim.