The Democrats aren't doing anything to slow down a descent into fascism. In fact it could and should be argued they're accelerating it by not offering any reasonable alternatives to the type of populist fascism the American right offers. To be described as slowing fascism they would have to be actually doing something to slow it rather than letting it happen but tutting quietly about it. The only thing they're doing is spitting in the face of their constituents in favor of the asks of their capitalist donors.