Was locked outside of Capital Grille on 633 N St. Clair St., near Michigan Ave and Ohio. It is a busy street, and it was daylight. I was on the corner, less than 20 ft away with my back to my bike, doing a peaceful protest against the restaurant for less than 1 hour. I think the car valet staff may have been involved because when I first arrived, he came up next to me and was chatty, asked me if I was going to lock my bike (and asked about the weather, etc). It really struck me as a strange interaction, and I told the other protesters about it when they arrived. Unfortunately, I didn't move my bike, even though I was suspicious. Considering I was there for less than an hour and it was taken from right behind my back, it seems like he was involved. I'm just freaking out right now and can't stop crying. I'm going home to find my serial number so I can call the police and file a report. Please help if you can!