This is what qualifies as a legal defence in twenty-first century Britain. No need to worry about the law. No need to be concerned with the consequences of your actions. If you can find an excuse, especially if it is in a minority religion, then you’ll be free to go.
The attackers’ actions look no different to many other racial hate crimes that go on across the Western world, sadly on an almost daily basis. But you can bet that if white girls set upon a Somalian woman in the street, calling her a "brown bitch" they’d have the book thrown at them (and rightly so).
Racial violence and drunk and disorderly behavior have no place in our society – that’s why those things are illegal.
To suspend such notions on the basis of race, religion or circumstances other than clinical insanity is a sure fire way to hammer home what seems to be the nation’s new, nihilistic motto: “Britain – do whatever”.