“I’m a democrat/liberal, but…” is a tried and true method of conservative dismantling liberal talking points. Sure, as liberals we are far more openly critical of our leadership than conservatives are of theirs, and we regularly voice those concerns. But that isn’t our entire discourse, and we just as openly support liberal policy and leadership where it’s deserved. If someone’s entire schtick revolves around criticizing democrats or liberal policy without supporting good policy or people, they’re not liberal. They’re just a waste of time.