(170502) — SAN FRANCISCO, May 2, 2017 (Xinhua) — A woman holds a banner and chants in the Justin Herman Plaza in San Francisco, the United States, on May 1, 2017. Thousands of people rallied and marched in San Francisco on Monday for May Day demonstrations to advocate for the rights of workers, women and immigrants. (Xinhua/RSS/Liu Yilin) (zxj)