Urban vignette

Are these transit cops questioning this woman because she's Black? Or because she's poor? Or because she's not perhaps living in quite the same dimension as the rest of us? Whatever the answer to that, they clearly felt empowered to talk to her and she seemed to acquiesce before their assertion of authority.

The officers had come out of a passing train and advanced directly toward her. I noticed them before I saw her.

After an exchange of words, they watched her move down the platform and kept her under watch until she boarded a train.