Raiders are any group of people who pillage, plunder, murder, or otherwise ruin the day of anyone unfortunate enough to not be one of them. If there were still laws, they'd be outlaws. Raiders are trying to organize into organizations all over the wasteland, and are one of the biggest problems of the California in the year 2238. Raiders tend to organize into loose confederations of gangs in the post-apocalyptic wasteland and are a constant problem, because it's much easier for them to just shoot people for their money, food, and other valuables than to earn an honest living. Raiders typically prey upon travelers and very small towns, leaving more populous areas alone, where they are easily outnumbered.
Their territory is marked by Khan Totems.