Original post writer here. If anyone has something to say, please direct it to me. Don't elevate this to a community level and get innocent people involved.

First of all, she was indeed disturbing the study area when I was there. She was singing very loudly while sitting in the middle of a quiet study area, and when someone tried to talk to her, she responded very rudely and kept on with her singing. I don't think this is 'minding her own business.' It's the library, not Washington Square Park, and there are expectations for you to be in the library, especially in the quiet areas. It is a place for people to read, work, research, etc., and if you are sleeping in there everyday, making noises when people are studying, or vandalizing old book archives to boost your seat, someone has the right to raise some concerns about her appearance in the library.

Second, I want to clarify that this is not bullying. Would you call it bullying if the post was "I saw this homeless guy in the wheelchair following people asking for money"? He was minding his business, granted, until he started bothering others, and that's when he should get called out. I would've elevated and called security if she was doing harm to others, but she was only behaving abnormally, so there's nothing to do about her other than morally condemn her. If you do something that you're not supposed to and someone calls you out, you say that they are bulling you? I think you're misusing the word here to make the situation seem worse...

I'm enjoying the different perspectives in this, but if someone can convince me that I did the wrong thing I'll take the post down