I think we all know where this started, the political brutishness, the ignoring of traditions and norms. Donald Trump is both origin and rationale.
The mean girls of Congress have learned at his knee. They have taken their tactics from him. They claim to be his reluctant imitators but I think they admire his ferocity. They have a taste for it, and a talent.
They are good at being the thing they supposedly despise. They are not the antidote to the current brutality but an iteration of it.
They are his natural children.