You gave the reason yourself for why it gives off as being anti-Islam.
Islamic rape gang? As you said they originate from Pakistan, call them Pakistani rape gangs. Pakistan is a state very young one it's not the official representive of half a globe of people.
India has a serious problem with rapes in its country. Should we call it a 'Hindu' rape problem?
Baffles me how people in Europe confuse their immigration problems under a single umbrella of millions of people with different cultures and whatnot.
Europeans like to make fun of America, rightly so for some reasons. But America has been on a whole excellent on attracting or even hunting the excellent of minds from 'Islamic' countries. Believe it or not from 50s to 80s they purposely initiated immigration of from Pakistan, Egypt, Iran etc.
Pakistani Americans have a much better reputation than their British counterparts, and they are very well off. Many of them highly reputed Pakistani doctors or 'Islamic' doctors.