Main takeaway: Crime is rampant for two reasons: (1)There's little chance of successful prosecution because migrants have no id and the ability to vet has been lost. and,
(2) Historically, revenge cultures have rejected advances of the Western World. Now 'high trust' cultures are being challenged on their own soil. Cultures where the generational norm is impulsive revenge thru humiliation and intimidation are incompatible with cultures which have a generational record of relying on laws of a peaceful, structured society to protect the rights of the individual, especially of women and children.
Crime is rampant in Germany but has only limited connection to the refugee/asylum deal.
German cops will tell you that when they come to regular snatch-and-go or break-in episodes, and solve them....they tend to be either gypsies from Europe, Bulgarians, or Romanians. The car theft business? They tend to lead off to Russian gangs, who transport the vehicle east out of Germany. The drug sales business? It usually lead to north African asylum members.
The cops will also tell you that around the early 1990s...a decision was made at the federal and state level of Germany to decrease cops. For every ten cops retiring....most everyone got into the habit of only recruiting 8 guys to replace the ten. There are a lot of urbanized areas which now have 30-percent more people than the 1990s but their cop force is only three-quarters the size of the 1990s force that they had. This lack of cops also helped to make the crisis bigger than it should be.