I got a surreal feeling when reading about the police reaction. When I lived in Stockholm a decade ago, I called in a few times. The worst case was in the subway, when a big black guy talked incoherently in bad Swedish and started to beat on the windows with a crowbar. I shrugged, walked to the next wagon and called the police. I gave up when I realised they weren't interested in hearing which subway line I was on an…
Actually recently the cops have been told not to engage when a crime is occurring, and instead just to take notes. They don't want riots.
A week ago a riot occurred in Rinkeby (islamic enclave) when a cop stopped a speeding car.