I never said that crime as a whole increased, but the violence reached a whole different quality. You (deliberately?) misinterpret comments you don't agree with.
Stabbing people -which was never a big issue- has become very common, for example. Kicking people when they're down and out etc. Hurting people for fun. Someone I knew was stabbed and murdered for no reason at all. Not even a robbery. Just killed.
Even in fights, there used to be some unwritten rules of respect and common sense, but they're gone. The people who are responsible for most of these violent crimes brought this crap with them.
It's gotten to the point where knives are forbidden in certain areas and knife bans are under consideration.
I'm talking about Germany, by the way. How about you are a bit more open-minded and stop assuming other users' nationalities?