system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why were so many prominent serial killings done in the 1970s?

Hillside murders, the Zodiac Killer, Charles Manson; is there something in the 70s that led to high homicide rates and many serial killings?
gpt
It's a media cycle thing.    
It was in the popular imagination at the time so the media latched onto it and reported heavily on it.     
There are currently a number of active serial killers known that no one ever reports on. One in NYC has been dumping bodies in the same place for decades.