There's a movie about them coming up as well. They were rumored to be an extremely dangerous bunch; and once the narcotics business kicked into full gear they became increasingly worse while getting some savage marielito criminals to do their cleaning work.
They're supposedly still active, but like any of the types of OC that had their main "moment de gloire" in the 80's - the Colombians, Cubans, Jamaicans, the Dixie mob... - they aren't really considered to be THAT much of a threat anymore for the feds to give them their time of the day.