I think all of the people (in this thread, and at Coinbase, and at Amazon, etc.) could use a reminder that opening the door to politics in the workplace includes open support for, say, Donald Trump, too.
I read the original post from Brian as; you can, but at work one should work. Coinbase isn't paying folks to debate politics, they're paying someone to further the company mission.
this is undoubtedly true, but also undoubtedly easier said than done. we don't seem to be wired as a species to have difficult conversations without feeling emotions amd having those emotions affect our relationships.