Let's get one or two things clear.
This is primarily a football forum and encompasses people from all walks of life, creeds, colours, religions and from all shades of the political spectrum. As long as people abide by the Code of Conduct they are free to post their views and opinions. If they breach the CoC, they face sanctions up to and including a permanent ban.
You are free to decide whether to post on here or not and if you decide not to bother, no one will stop you if that's what you want. If you want to join other forums and post on them, you're free to do so.
No one has been hounded off here or banned because of their politics, unless these were so extreme that they expressed views on here that breached the CoC. So we've banned some people who expressed views they'd cut and pasted from far right wing, anti-semitic or Islamophobic websites.
Some users felt they were denied "freedom of speech" on here and went elsewhere. That's their choice. Some chose to join them who'd been banned from here for persistent or serious CoC violations. No problem with that as it's a free country. As "The Pound Shop Gordon Gecko" (aka SWP's Back) said so succinctly, that gave them the chance to express views that our CoC forbids. If that's what they want then fine. But some of them chose to be extremely abusive on this forum to posters on here who were of different ethnic backgrounds, religions, disabled, which none of you have really seen as we've mopped it all up. Not surprisingly that left no choice but to ban them.
Not because they were left wing, anti-Israel, muffin-ites, Mancini fan-boys, preferred 4-4-2, liked Morrissey or any other reason other than they broke the CoC by failing to respect other users.