What did the police do to me five years ago?

Five years ago, I had someone call the cops on me. They came and talked to me for a little bit (5 cop cars showed up) and then they asked me to stand with my feet a little bit apart and said they were searching me. Two cops stood in front of me and asked me questions, then I realized there were two or three behind me, one of which asked if I wanted my hands behind my back or at my sides. I chose sides and felt something heavy being slid around my waist, then felt weights on my hands. At the same time, I had felt weights on my feet and one cop told me to take baby steps and don't look down. When I walked, there was a pressure/tug on my ankles. Then when I arrived where the cop was taking me, he told me to look straight ahead and stand still and I felt those weights being taken off of me again before we went in. I live in the United States and was wondering what it was that I had felt that night. Was wearing somewhat thick clothing, so did not feel any metal. Also, had done nothing wrong and this all happened on someone else's word.