Well if this is true, same concept, they are upset at migrants, in same way some Muslims upset at Westerners, but instead of taking it up with the governments representing them, or the power structure around the globe, they take it out on ordinary people among each other. So the people have legitimate concerns, if they don't want migrants, that's none of anyone's business, it is their right to have such position, but the people exercising concerns in wrong manner.
But, honestly, sometimes I don't blame, the governments are ignoring the people. This is something Arabs are used to(by our governments), but not something Europeans used to. If Europeans are now being ignored, and taking matters into their own hands, then this beginning of new era.
Of course if it is white shooters, you white-haters are going to make such a big deal out of it, and be very racist towards whites, even though it is isolated incident. And you're going to pretend like you're better people. I'm not in no mood to hear Muslim FB friends go on rants against white people, make pro-BLM and pro-Syrian terrorist opposition sentiments, like the idiots that they are, and of course pro-Israel nonsense from them too.
The white hating media will make a big scene out of this, and tell the Europeans they must be punished and bring hundreds thousands more migrants, and keep supporting terrorists in Syria to topple the government, and keep tax money and free submarines to Israel ...