Hence the use of the word 'mainly'. It is mainly practised by Mohammedans. Period.
Unfortunately 'Human Rights Watch' is another of these lefty pressure groups trying to insist that the world is not as the evidence in front of us shows and that, in essence, anything the West does is A BAD THING.
Just look at their web-page.
https://www.hrw.org/
Abortion in Ireland, Gender Neutral Holland, Face Veils in Denmark, CIA Torture and Sodding Greenpeace. These are apparently the most pressing 'human rights issues' today. F**K off!
Meanwhile there's tens of thousands being killed out there but not to worry because some bloke with a beard can't use the ladies loo at Schipol Airport.