There's not really a way to prove it, since reddit doesn't have transparent moderation, but in my experience /r/politics tends to ban users with different viewpoints.
You believe something that doesn't have a way to prove it? Were you banned personally? Or are just believing anecdotes from people with an agenda?
What makes you believe it then? Anyway, that sub bans people only for violent threats and such, but opposing viewpoints are downvoted a lot. They even have some pro-Trump mods on their team who can see and reverse mod actions including bans.
Anyway you can try an experiment if you care, post on there (with a new account if needed) very partisan stuff, but don't advocate for violence, and you'll find yourself not banned.
Why would there be a lot of opposing viewpoints that are buried under downvotes if you sort by controversial then? You’re making claims with no basis whatsoever.
What makes you believe it then? Anyway, that sub bans people only for violent threats and such, but opposing viewpoints are downvoted a lot. They even have some pro-Trump mods on their team who can see and reverse mod actions including bans.
Anyway you can try an experiment if you care, post on there (with a new account if needed) very partisan stuff, but don't advocate for violence, and you'll find yourself not banned.