This gives me the impression that the author is an attention seeking, virtue signaling, white knighting narcissist. My assumption could be wrong, but it is just as valid as his assumptions about the situations he saw.
Look mate. If you want to bring attention to micro aggressions against people of color in Berkeley, there are plenty of PoC whose write on the subject. Reference their work. They know better. They don’t need white interpretations.
I’ve lived in Australia and observations of micro aggressions in the US from an Australian is a bit much.