[Clemster_1997]

There is literally no harm in discussing politics unless as wise pointed out, you have people who are going over the top, or people who are taking it too personally. If it's really disturbing you that much you could just disable the chat. It's a great place to learn about politics and stuff because people talk pretty freely about their views while playing a game, and it gives perspective to anyone who wants it. There really isnt a reason for banning politics.
If you don't enjoy itnobody is forcing you to read the chat.