Oddly, the Voodoo Boys remind me a lot of Iraq and his crew from WATCH_DOGS. Iraq is sort of a mini-Eric Killmonger in the fact that he's aware that everyone sees him as nothing more than a gangbanger and thug so he doesn't bother to present himself as anything else despite being an incredibly skilled former Army Intelligence officer running a private army inside of the Chicago projects. Iraq is a genuinely terrible fucking person and involved in the South Club's human trafficking and murder for hire but he's a genius and a character that comments on the fact the Chicago PD utterly miss how dangerous he is because they're racist as fuck (RAF).
The Voodoo Boys are a very interesting rebuttal to a lot of stereotypes in Night City because they're called that by outsiders according to Placide but not by themselves. Which means, RAF gangsters see a bunch of Haitians and basically called them after a white gang in the city. They're by FAR the most advanced gang in the city, have their own supply lines rather than the ones the rest of the gangs use, easily tear through the firewalls of Clouds, and are not even concerned with "street crime." No, they outright RULE Pacifica as a feudal domain and are planning to side with the Machines in the upcoming Singularity War.
But people can't see the fact they're an army of super-genius hackers because they're Haitian refugees. Is it a bridge too far that Brigid confirms they're not even religious? Maybe. However, they use a church as a cover because they're dangerous high tech criminals using the RAF Night City's assumptions against them.
There's something else there, though, too. The Voodoo Boys aren't an uplifting positive discrimination story. You know where the white savior V (assuming they're white) comes in and helps them and they all become friends. No, the Voodoo Boys are evil as fuck. They are not you friends, they have no interest in being your friends, and think of you as disposable street trash. They're not any more evil than any other gang in Night City but they're just a nasty bunch of people and that makes them more interesting, IMHO.
When I killed them, it was basically because they killed Evelyn and dismissed her as a whore. Which was all the more powerful because of the empire they'd built.