This is not true. The EU isn't asking for immigrants to "pursue diversity". It's just about sharing the load of legitimate asylum seekers as currently the load is too heavily borne by the border countries.

And we had crime before we had immigrants. It's a feature of social economic status not ethnicity. Before we had the Moroccan gangs in Amsterdam we had the local Mafia which was just as bad.

I do think immigrants without a permit should be evicted but the problem is that many countries like Morocco refuse to take them back.

And yes I live in a major EU city. The drug problem isn't as bad as you describe. And it's more a result of police budget cutting than immigration.