I think if we should talk about blck organized crime,
Theirs four groups that come out of the lot.

You have the nigerian syndicate/mafia. The Nigerians groups
like the Black Axe, are in many countries of the world, and they are
all linked together. There presence is strong in many countries in africa,
like south africa and the ivory coast. They also habe a great presence in
many asian countries, like india, vietnam, japan and others. The nigerian
mafia are very strong in the states of Gao in India. They are also strong
in many european countries like italy, spain and england. Some sources will
say they are also in brazil, chicago, netherlands and other countries. Theses groups
are aleays link together. And the source is in Nigeria.

The second group would be the jamaican posses. They have lost alot of power since
the 80s and 90s due to murders and deportations.But the jamaican groups, like the shower posse
have or had a great presence in miami, nyc, philly, houston, toronto, england and probably other
places.

The third group would be the haitians. Since the 80s, the country of haiti has become more and
more important in the drug trade. During the reign of duvalier (the son), the military, the police and
some rich groups, have become some kind of caribbean cartel. A mini cartel if compared to mexico or
colombia, but still powerful enough to be one of the biggest place of cocaine in the caribbean with the dominican
republic. A lot of drugs coming to the US or Canada come from Haiti. Also, with the US, venezuela,Haiti is the top country
in arms trafficking in the caribbean. Alot of guns found in jamaica or others caribbeam countries come from haiti. And no,
is not international group who just utilize haiti. Haitians groups have a lot of decisions in this. Also, in the US, haitians groups
are probably the black group beside african americans, who have alot of power in the rap industry. With names like haitian jack, henchmann, zoe pound and probably others. Haitians are really present in miami, new york, montreal, bahamas (1/3 of the population),
Guadeloupe, martinique, Dr

And the last one would be african american groups like those from LA, nyc, chicago.
Many started as street gangs, but some of them have become real organized crime group.
Some are in drugs, prodtitution, gambling etc. But the biggest things they succeed in by
doing money laundering with the help of the entertainment buisness.