Firstly, there were only a small number of medics,compared to the size of the crowd. The police started firing teargas, even when there was nothing really going on. They gave no warning in any language, and fired randomly into the crowd. I was with the pink and silver bloc at the time. I have heard others say that we were teargassed about 20 times in 2 hours. They started directing the canisters straight at people, firstly at their legs, then their stomachs, and then at people's heads. I saw several people directly hit in the stomach.