yakuza (Japanese mafia), gangs, violence [tw: sexual assault]

mafias, street gangs, criminals [tw: sexual/physical assault]

mafias, various criminals, thieves and con artists

gangs, criminals

detectives, police

gangs, guns, mercanaries, assassins

guns, gangs/ pirates, mercanaries

gangs, criminals, and detectives

mafias, street gangs, criminals, 1930s

assassins, guns, action

criminals, street gangs, violence

street gangs

terrorism, police detectives, criminals, violence

crime syndicates, mercanaries, violence, guns

police, detectives, criminals, serial killers

conspiracy, hacking, some action, guns, violence

police, detectives, criminals, serial killers, violence, guns

police, detectives, criminals, killers

like deathnote, minus the supernatural and suspenseful elements, instead it's just plain bloody/ violent and the MC's 'powers' come from alien life forms

street gangs (just a bunch of juvenile delinquents running around)

street gangs

very similar to Durarara and Banana fish except it takes place in the future

assassins and violence

guns, assassins, other mercanaries

'bounty hunters', criminals, violence

assassins and guns

assassins, guns, violence

hacking, criminals

hacking, criminals

yakuza (Japanese mafia) -This anime is more of a comedy and less serious than all of the others on this list, I only chose to include it because it's related to the yakuza..otherwise it's just a joke

terrorism, criminals, violence

police, detectives

guns, assassins, violence

comedy

mystery, criminals, psychological, violence

guns, criminals, noir

gang activity, terrorism, violence, criminals 

involves magical assassins and touches on gangs / drugs

Arc 3: Phantom Troupe, is all about mafias, assassins, and criminals in general

GANGS in Ikebukuro

crime, detectives, action

XEN & ATAI

detectives, criminals, police, mystery, sherlock holmes vibes

modern retelling of the legend of Nezha, this time with Chinese triads/the criminal world involved

gangs, mafia