Shocking footage of a violent fight between families touring a Chinese zoo has been shared online. The trivial argument between two visitors on Sunday (local time) led to an all-out brawl involving at least six people, including a woman holding a young boy, Beijing Wildlife Park said in a statement. Video of the incident, which occurred in the gorilla area, has gone viral after being posted to social media site Weibo. Footage of the violent brawl at a Chinese zoo showing a woman holding a child pulling another woman's hair. Video footage of the incident, which occurred in the gorilla...