The typical liberal does NOT believe in freedom of expression (among with all kinds of other rights). They try to emotionally blackmail their opponents by raising such freedoms in public discourse (e.g. “playing a race card”, etc). But when you look under their skin (which is rather thin) you can see that it’s only so they can force their worldview or governement upon others.
Their name-calling and patronizing is a consequence of generations of being out of mainstream thought. Like little children, they have to throw tantrums to get attention.