I was in a similar situation. My take? I have two options. How would I feel if I were wrong about each?
If I thought the guy was innocent so I did nothing and later found out I was wrong, I would feel terrible.
If I thought the guy was guilty so I reported him and later found out he was innocent, I would feel foolish.
I can live with foolish.
Option 3, you call the police and they nvestigate you for wrong thinking and a hate crime.
Well stated.