Actually I think the concept of microagressions had the potential to be very meaningful but then SJWs took a giant dump on the whole thing and completely ridiculed it. Certain marginalized social groups (or even less marginalized ones) are treated in ways that are subtly patronizing, hostile or ridiculing them consistently, over and over again, making them feel angry or inferior or whatever, that's a fact. There could be an intelligent discussion about this and people could get more aware of how their behaviour may be causing discomfort to other people, but instead SJWs just started getting comically upset over inconsequential stuff, completely missing the bigger picture.