How to stop a concert crowd from stripping your clothes off when surfing you in the air?

My girlfriends and I went to the peace festival last weekend on a warm weekend day so we just wore our sundresses and bikinis so we could get some sun while listening to some fab music. But later in the day, the crowd got a bit rowdy and started picking me up and surfing me around the park. I thought it was fun at first then realized my bikini top and bottom were being pulled off and I tried to stop it but I ended up completetely naked being carried across the field and being touched by everyone with no way of getting down. Finally my friends and security stopped it and gave me a towel to cover myself up. What ended up fun was one of the most terrifying things I had ever been through.