Often, since the George Floyd death I've noticed how much racism still exists. I've heard many people say racist things, and I feel so helpless when I hear them. I've talked to my therapist who's black and is a huge blm advocate (although I know that one black person does not represent the viewpoint of all black people) and he tells me that basically if someone says something I disagree with, I should just say "oh okay" and not start an argument. I'm also told by many people that I should just stay quiet in order to avoid it escalating to a physical fight. 
This is so confusing, however, as I've been also been told from society that I should be a social justice warrior, that I should stand up against these people, and that "silence equals violence" but didnt MLK stand up for civil disobedience? 
I was triggered today because I saw a guy with a swastika tattoo at my gym when I went into the sauna. He took his shirt off, as one does in a sauna, and I was looking right at it. However, he quickly engaged with a person of color in a friendly conversation. I waited until they both finished their sauna session to make sure that she was okay and then he left a few minutes after and he left as well. 
I have social anxiety as it is and just the thought of standing up to someone vs. Just staying quiet is one that gives me sooo much anxiety. Idk I guess I'm wondering what y'all think? Could I have done more in this situation to prevent racism/ hate?