This guys thinking is completely illogical and irrational. Either something in his mind has recently slipped, or he has always been a stupid lefty libtard who is mentally choking on what the media and the left has fed him over the years. His ideas need a mountain of clearing up.
In my far from professional opinion, I think that go out on these revenge sprees are folks who’ve obsessively dwelt on (real or perceived) injustices that have been done to them. The deeper they dwell on it, the more it distorts rational thinking and further clouds the mind.
Once it’s gone so far, they become compelled to act on it. They feel they simply have no other choice available to them.
Everyone on the planet, before us or to come after us, has or will have had a case of butthurt, or been perhaps been terminated from a job, or have their heart broken or have been mercilessly razzed. This is just a sad fact of life; it’s almost guaranteed to happen to everyone - it’s a universal situation.
The overwhelming majority of people either blow it off or get over it. But there’s a tiny percentage who do neither. They think on it, day and night, it haunts their dreams, it consumes them, and then finally one day, it vents itself like a volcano under pressure from magma.
And then people end up dead.