It is quite possible that the encouragement in schools of gender fluidity and homosexuality is the motive.
Homosexuals and transexuals are 3 to 6 times more likely to commit suicide than heterosexuals. That's massive.
Of course they blame guns because they can’t blame the actual root causes... like the stress on people and families due to an economy in the toilet, an absolutely unsatisfying materialistic culture based on simply collecting more stuff than the next person, and the forced adulation of everything offensive and perverted by popular media and the entertainment industry. Their solution of course to all unhappiness is a pill that just got out of clinical trials and your insurance will pay for.