I agree that Thanksgiving should be enjoyed without much contention. But I actually have changed people’s minds by debating with them. Many people don’t think about their actions until you challenge them. (Also people might change your mind or teach you how to think more clearly/argue better, if you have difficult conversations.)

For a bit of optimism: here’s an example of how one conversation made someone pro-trans rights (from anti-trans). https://www.vox.com/2016/4/7/11380974/reduce-prejudice-science-transgender