I've been in a situation like that, and as the crowd moves, you are unable to stay in one place....it MOVES YOU like a wave, first one direction, then another. YOU have no control over your position, and what direction you go. It literally picks you up off your feet and takes you with it. It's terrifying. It happened to me and my sister when we attended a New Year's Day parade in California. A pedestrian sidewalk became blocked with too many people, and suddenly surged against a two story storefront with plate glass windows: the windows creaked and gave way, injuring one of two people. At one point, I was pushed against the glass and felt/heard it groaning as the pressure on it increased. A split second later, I was suddenly moved away from the glass, which descended in large shards, cutting the people nearest the display window. Later, reaching into my coat pocket, I retrieved a large shard of glass that had fallen into it. It was as big as my hand with fingers extended. Why I wasn't cut or injured, I'll never know. No, don't like crowds. Children are especially vulnerable.