Pro-Palestine protesters lit flares and smoke bombs on Monday, September 2, as thousands rallied in Manhattan in support of Gaza.Video captured by Brendan Gutenschwager shows protesters with flags and signs marching down Park Avenue, near Grand Central Station, as some protesters can be seen lighting flares and smoke bombs in the street.In another video, police officers are seen putting a demonstrator in handcuffs.The protesters first rallied at Union Square before marching down Manhattan streets, as seen in footage from organizers Within Our Lifetime. Credit: Brendan Gutenschwager via Storyful