The 1970s was a decade marked by economic upheaval, political protest, and individualism. Dubbed the “Me decade,” the ‘70s were in sharp contrast to the free love hippie era a decade prior. Disco was king, Atari introduced pong to the masses, and Norman Lear changed the face of television forever. But the 1970s weren’t just a time of endless partying at the local disco. There was also a much darker side to the era, as multiple notorious killers collectively targeted hundreds of victims. These are hands-down the most dangerous serial killers of the 1970s.