This is what happens when there is such political correctness that people don't have the right to express themselves. The boiling that happens below the surface suddenly explodes into violence.
Very profound.
Not that the violence is justified, but those (like the Guardian) who have crushed free expression carry a great deal of the responsibility when it finally breaks out.
Not that any of the PC-people will accept any such responsibility.
The straw maybe be finally breaking the camel's back. Let's hope so.
Response: The non-European never grasps this fact about the Teutonic peoples. That is why non-European groups are eternally suprised when things blow up in their face.