"..or are the children of Muslim migrants from North Africa or the Middle East?" Good question: why the children born in Europe and not their parents born in so-called "terrorist" countries? Because their parents are grateful to have been admitted in these Europeans countries, and were expecting to be treated like "strangers" in this new country upon arrival. But their children are enraged to be treated like scum and subject to racism  from citizens born in the same country as they are. And with posts and attitudes like yours, it is clear this is far from over.