Wells conducted a small focus group study in 2000 involving horror film audiences of different age groups. He found that their interests and fears aligned with the real world horrors of their era. Older groups were less scared by graphic violence after experiencing World War 2, while younger groups were desensitized to gore from increased on-screen exposure. Cohen's theory of moral panic posits that the media can define certain groups as societal threats, influencing viewers. The film The Purge uses the moral panics of crime and gun control in America as sources of fear. More recent horror also taps into modern moral panics like online privacy issues in films like Unfriended.