In Zurich, it was reported that radical left groups used the Halloween party as a cover for provocations, setting up barricades with garbage containers and electric scooters, setting fire to vehicles and objects, and attacking police officers with fireworks, stones and bottles. The police responded with water cannons, tear gas and rubber bullets.

In Zurich, it was reported that radical left groups used the Halloween party as a cover for provocations, setting up barricades with garbage containers and electric scooters, setting fire to vehicles and objects, and attacking police officers with fireworks, stones and bottles. The police responded with water cannons, tear gas and rubber bullets.