There absolutely are, but in his Philadelphia speech, Biden equated anyone who supports his leading opponent(s) in 2024, with being a domestic terrorist.
I'm a Pacific Green so I have no allegiance to the Ds or Rs, but from where I sit, everything the left accused Trump and the Republicans of is what the Democrats are actually doing. Fascism is the unity of corporate and government power. And Big Tech, academia, and the Democrats are all on the same side, and it's the left committing terrorist acts (Antifa harassing motorists, Shannon Brandt etc).
If anyone is pushing extremism it's the Democrats.
it's the classic "convince everyone that your opponent is doing what you're guilty of" that both sides use.