In the US, we've usually had reasonable parties in power, so it really didn't matter what your politics were.
Now... Not so much; and it goes both ways, too. There are loonies on both sides of the aisle.
I've always seen CoCs as needed for situations where a conference has a transgender person and a "poorly socialized conservative." Or a Christian proudly wearing a cross and a "poorly socialized liberal." Situations are even simpler; it could be a conference with a female speaker and a man who still believes in strict gender roles.
Unfortunately, the above situations come down to "political belief."
That is such an American PoV. Plenty of places in the world have or have had political persecution. It is a very real issue in large parts of the world.
In general CoCs enforce a very American world view, one where I as a non-American do not feel welcome.
In the US, we've usually had reasonable parties in power, so it really didn't matter what your politics were.
Now... Not so much; and it goes both ways, too. There are loonies on both sides of the aisle.
I've always seen CoCs as needed for situations where a conference has a transgender person and a "poorly socialized conservative." Or a Christian proudly wearing a cross and a "poorly socialized liberal." Situations are even simpler; it could be a conference with a female speaker and a man who still believes in strict gender roles.
Unfortunately, the above situations come down to "political belief."