Not A Massacre?

NIAC gets an email from a "trusted source" who attended today’s rally at Baharestan:

I was there from 5:15 to 7:30. It was very tense. Being out in Baharstan was an act of defiance. No one said anything, there were only a few chants coming from outside the square. Although the police were a lot nicer, the Basij continued to be brutal. No one was allowed to stand in one place, we had to keep on moving. The moment we stood in one place, they would break us up. I saw many people get blindfolded and arrested, however it wasn’t a massacre. I heard that someone was killed, however I didn’t see it.