I'm not sure what type of self-hatred this is. Someone wants to go to a bar, unsure of the legal status of another, color plays a factor but we know nothing about their socioeconomic status or if this writer is in California, the friend of the date asks not as if he is looking for something to get the writer on but rather to make sure they won't have issues. This does not imply anything about his opinions of the writer, and seeing how he is ok with the writer's presence I doubt that this is an issue of "patriotism", it's a legal concern.
Patriotism in America is about uniting under the flag and it's values; it's not about if you are a certain color. There's a reason why we have American patriots of all races; you don't really see that too often in other places. If you don't have those values, then you aren't one of us, that's what patriotism is by definition in this country and our context.
Patriotism and religion are both cloths people wrap around themselves to convince themselves they're good people, so that they don't have to actually be good people
You as an individual are not required to do this if you don't want to, but if a movement wants to be successful then a degree of empathy with those who are resisting the movement is likely necessary for success.
To have empathy with a view is not condoning it