Yeah, evolution and climate change are all big hoaxes perpetrated by sinister Democrats. At least we ain't responsible for the religion hoaxes...
Evolution is science.
AGW is a religion that attacks science.
There is no relation between the two. No one has been silenced by advocates of evolution - inquiry is encouraged, that's how science works.
Now AGW allows no questioning of dogma, as it is religion, not science.
The issue isn't the individual topics, the issue is that most progressives have taken on their political outlooks as their faith, and thus anyone opposed to them is attacking not just the position itself, but the person holding the viewpoints. It turns critics into heretics.
A person's belief in evolution or not does not impact me on a personal level. Someone trying to make my electricity more expensive because of AGW does. Therefore I am more resistant and questioning of the AGW people than the guy who thinks evolution sucks, but that belief doesn't impact me in any tangible way.