this site

This isn’t a site. It’s a collection of sites (instances).
If there is an instance that doesn’t tolerate your kind of speech, then choose another instance that does.

Be aware that two of the largest hardcore left-leaning instances (hexbear, ml) have been widely defederated (instance-blocked), so it’s not fair to say that this only happens to right leaning or centrist ideas.

The beauty (and point) of Lemmy and fediverse is that if you feel like you’re being censored, you can join or make an instance of like-minded people, while still having access to the other area if you want it.