A protestor prepares to hurl an object at police officers in Hong Kong, Saturday, August 31, 2019. While other protesters marched back and forth elsewhere in the city, a large crowd wearing helmets and gas masks gathered outside the city government building. Some approached barriers that had been set up to keep protesters away and appeared to throw objects at the police on the other side. Others shone laser lights at the officers. (Photo by Kin Cheung/AP Photo)
