I'm probably going to regret posting this because of the subject, but in my opinion this wasn't sexual harassment, it was plain old harassment. Jackson didn't want to do anything sexual with Nicole, and I would swear Nicole didn't think he did. She wasn't scared, and she didn't feel unsafe, she was very angry. He was pressuring her in inappropriate and intrusive ways, yes, but not to have sex. He wanted to discuss something she didn't want to discuss and didn't want to take no for an answer.
I'm far from a Jackson fan, and he has a lot to learn about how to treat people, but I don't think he should be accused of sexual harassment based on this video.
That said, if it were me instead of Nicole I would scream "Go away or else!" instead of just thinking it. Then again, I'm older. At Nicole's age I probably wouldn't have, sadly.
I know this is a YMMV situation, so I know many people will totally disagree with me. That's okay.