In what way? In 2016 I did have people approach me for being brown. I live in a liberal white enclave in NE Portland, so this is fairly common for me. Yes, it's extremely weird.
Yes, people approaching people on the streets of a major city due to their skin color to offer their condolences is unhinged. I didn't call all democrats unhinged, just the ones that do weird shit like that.
I'm not questioning your experience at all—the trouble is that you have a lot of context pre-loaded into memory, which readers of internet comments completely lack. If you don't want to come across the wrong way, you need to account for that beforehand. Basically how I often put it is: the burden is on the commenter to disambiguate. That's especially true when it comes to your intent, which is something only you have access to.