I feel like you're trying to look at this from a very abstract place where it is impossible to come to some all encompassing grand unifying theory and it feels

I feel like you're trying to look at this from a very abstract place where it is impossible to come to some all encompassing grand unifying theory and it feels like without that we shouldn't act until we have an answer to that question. I'm asking a question that says in spite of not having a perfect answer when you are in a situation and you watch a friend do a racist act, what response if any do you think is appropriate? What if it's not a single act that might be considered racist but a whole string of them? Do you think there is any kind of moral or social obligation to do anything or is ignoring it ok?