Newspaper missions. Vigilantes will find lots of people to kill on newspaper missions.
They may not be able to get the newspaper themselves - if it's true that all Villain contacts would be unavailable to Vigilantes, and all Hero contacts would be unavailable to Rogues - but they could still join teams doing those missions.
49% make us fight Longbow, who are acting like villains and terrorists in the Rogue Isles - any proper Vigilante should be happy to show them why they're wrong.
Actually, a proper vigilante would very much approve of their tactics. That's what vigilantes do.
@Golden Girl
City of Heroes comics and artwork