I've read that article a long time ago. It says that they work TOGETHER. Ethnic groups aren't going to war like that in real life. I haven't seen a single case where Nigerians killed Camorra mobsters, but we do have the Castel Volturno massacre where the Camorra whacked a bunch of Nigerians. Until some news come out where Nigerians do the same to the Camorra I'm not believing that they're taking over. Also, Nigerians are being used as a scapegoat, like other migrants, for the real powers.
Immigrant groups will never be stronger or take over from domestic groups. Especially not in Italy,Russia and other places where organized crime is deeply rooted.
