The thing is, as I see it, the problem is not these ethnic groups, they are not to blame for being sent to another country or having to emigrate to find a better life, the thing is that there are supposedly interests behind that seek this, I'm not saying that it is so, but the probability is very high.
I live in a country where I have seen this for the last 6-7 years, where there is no type of immigration control, in this period more immigrants from a certain country have arrived than in the last 5 decades, and in addition, the governments give them full pensions without having to work and the level of crime has increased a lot, and when I say a lot it is almost tripled, ok, the problem here as you say is also money, take away the power of money from them and this cannot be like this, but it is complicated, I think everything is orchestrated.