One thing that does happen when you get more violent outsiders into a country: that will push also local gangs to turn more violent. They have to if they want to keep on existing, after all. But since we are talking about criminals they don't usually spare the law abiding citizens from that, much less try to defend them, and if you get caught in the middle in the turf wars, tough luck.
Yeah Finnish "gangs"...
Wanna bet these "gangs" have zero Finnish blood in them?
One thing that does happen when you get more violent outsiders into a country: that will push also local gangs to turn more violent. They have to if they want to keep on existing, after all. But since we are talking about criminals they don't usually spare the law abiding citizens from that, much less try to defend them, and if you get caught in the middle in the turf wars, tough luck.