glass-mirrored high-rise building

On a self-imposed photo walk, I went up to a parking garage to check out the view. Once up there, I had to take some photos of the city around me. After shooting some images I went to leave but hit the washroom in the building first (it’s like a small little mall). As I was leaving the washroom, a security guard came storming in the washroom and then made a quick u-turn after me. Oh, boy was I scolded for taking some photos up on the parking garage. I’m banned from going on their property and taking any pictures now - apparently. It’s a tough call - ask for permission or ask for forgiveness.