Liberals are masters of projection. Everything they accuse conservatives of doing, or will do, or think is because that is what they are doing, will do, or thinking, so they assume their foes do the same.
I wouldn’t say they are “masters” of projection. It is a tool they use, but it is only effective if it is applied to the right target. I have seen it so often, I call it out right away. I am a poor target.