No, it's a matter of enforcing British law.
Why is it important whether the people assaulting the mankini duo were Muslims, Catholics, or garden-variety English lager louts?
It ain't like Britain was riot-free and assault-free until the EEEE-VIL Mohammedans showed up, no matter how Blackleaf tries to paint it.
Well, moral relatavist that I am, I don't really see it as good versus evil. More as a clash of cultures. It's not dissimilar to what happened in many other mass immigrations of the past. They tend to be violent affairs. The current situation in England is a smoldering powderkeg as far as I'm concerned.