I'd say this was the WORST part for me
Spiderman does a local fundraiser and thinks that he can reveal his face because he is backstage in a kitchen or something. Nobody would ever walk in would they?
Plus I noticed a video camera on the roof, so if anyone bothered to be monitoring or to reveal the footage, he would have been sprung. It was incredibly careless of Spiderman. Also when he removes his mask on the ledge. Anyone with a camera could have revealed who he was.