RogueGenocide is a standard plug-in which allows rogues to be killed as if they were a team.
Previously, just the tank that was hit was killed, not all of the rogues. Normally, the genocide flag will not affect rogue players, since they are not a true team. This plugin changes that behavior so that rogue players are affected. This would also allow a rouge player to shoot another rogue with the genocide flag and wipe out all rogues (including themself). A rogue shooting themself does not trigger the genocide effect unless the 'suicide' option is passed when loading the plugin.
Rogue tanks who pick up Genocide often kill themselves to get the (usually large) score bonus from killing all of the rogues when the 'suicide' option is enabled.