The 90s saw a drop in crime across the board as the feds, states and local governments got "tough on crime". 1994 was the year of the Violent Crime Control and Law Enforcement Act, which was passed with the support of black leaders but is now called racist. Not sure what numbers this guy is using specifically because mass shooting has no agreed definition, but I guarantee wherever he got them it doesn't tell the story he thinks it does if you dig into it.

Spez: There was a time in America when a kid of any age could buy a BAR and a case of dynamite at his local hardware store, yet indiscriminate spree murders weren't a thing. The real question is what has happened to cause young men to so thouroughly reject society they decide it would be better to kill everyone around them.