"It is impossible to know the extent of Louisville's gang problem because the gangs' alliances are fluid. We concentrate our efforts on the most-violent gangs. Nearly all gangs we investigate are involved in drug trafficking, predominately the trafficking of heroin." Nobody's done 1 gang mass arrest in Louisville in the last 20 years like they do in other cities. The gang sets here have roughly been in the same neighborhoods and affiliated with crips or bloods for over 20 years. Just say "no comment"