Not just any young Muslims. Young Muslims with problems. If these young people didn't have these problems, they wouldn't be radicalised.
It's no coincidence that the attacks on Britain have been carried out by young men of ethnic groups from disadvantaged areas, most of whom have been previously involved with crime.
Mate the root cause is those radicalising young people. They are the easiest to monitor too. We know who most of them are. We can spend all day with our analysis of the economy or demographics or we can get out there and monitor or lock up people we suspect are encouraging atrocities. That saves lives not whataboutery as us Irish call it.