Late Saturday evening, protesters set off firecrackers and bangers in Zurich's Kreis 4 district. A barricade caught fire, according to a reporter from the Keystone-SDA news agency who was on the scene. According to the reporter's estimate, several hundred demonstrators had gathered. At first, many of them were still in disguise. Later, the demonstrators were dressed in black and had their faces covered, the reporter said.