There's a few attack dogs here that have to jump all over anyone and anything that they fear disagrees with them.
There's some sort of baseline insecurity that drives it - they have to put others down so they can feel like they're in control. It's called Narcissistic Personality Disorder, and those that have it are quick to ascribe and project it onto others because they think it camouflages what they are. There are examples here in the last few days.
Many of them have to inflict their politics on the rest of us so they can feel better about themselves.
It's well known who they are, and it's disappointing that nothing is ever done about it.