Naomi Montaie says she was in shock and recorded that video, posting it to Facebook because she felt everything she saw was wrong.
"I never witnessed anything like that. He just kept hitting him, and kept hitting him, and I was like 'oh my God...why you hitting him like that? Why you hitting him like that? You need to stop hitting him.' And he kept hitting him," she said with tears streaming down her face.
Montaie calls the young man in the video "nephew," but she says Nandi Cain Jr. is really just a sweet person from her apartment complex whom she's gotten to know over the last year.
She says officers who questioned her after the incident told her they were trying to stop Cain for jaywalking.