Accusations of racism are very serious. The gravity of the accusation requires a stricter standard of evidence. If I'm accusing someone of disliking okra, I don't need a logically airtight argument bolstered by multiple independent factual sources. If I'm accusing someone of racism, though, I have an obligation to be damn sure I'm right before saying anything. Serious allegations require far more than just bald assertion without warrant.

Imagining ourselves capable of seeing inside someone's mind and perceiving racism for which there is no objective evidence is incredibly arrogant.