The Onion has been making fun of human folly since its founding by two undergrads at the University of Wisconsin-Madison in 1988. The mock news site has created satiric pieces so smart some believed them real, others that were just plain silly, and one headline (“‘No Way to Prevent This,’ Says Only Nation Where This Regularly Happens”) that has achieved a dark fame after being reposted after each U.S. mass shooting since 2014 Isla Vista, Calif., attack.