@ConElPueblo has pretty much said everything I’d have to contribute to the debate, but I can’t leave this quote uncommented.
I’m sorry you feel this way, but how exactly do you arrive at this conclusion? I‘m a bit puzzled - having to deal with these numbers for work, here’s what I know about my hometown Düsseldorf:
2015
2.136.954 migrated to Germany. The highest number we’ve ever had.
Robbery: -11,79%
Theft: -2,80%
2016
1.865.122 migrated to Germany. The 2nd highest number we’ve ever had.
Robbery: -14,85%
Theft: -13,96%
2017
1.550.721 migrated to Germany
Robbery: -25,15%
Theft: -17,93%
2018
1.585.112 migrated to Germany
Robbery: +5,38%. Note: Robberies in public spaces - the ones that are considered especially dangerous for the public and most relevant for the feeling of security is still down compared to the previous year.
Theft: -12,16%
2019
1.558.612 migrated to Germany
Robbery: -9,91%
Theft: -4,78%
As others have noted, it might just be a bad idea to walk through empty streets in the middle of the night with a very expensive watch, no matter which city. I’m not saying the group in London had it coming and do feel sorry for them, don’t get me wrong. Personally, looking at actual numbers, I cannot see how migration has effected this, though, and falsely suggesting it might have is a dangerous endeavor.