A string of videos showing bullies beating up their victims were posted on Chinese social media platforms this year, exposing the seriousness of campus violence in China.

December. Shenzhen. A 12-year-old boy was filmed as a gang of bullies rained abuse on him. He was kicked in the head, and asked to kneel and apologize in front of the camera. He said the gang constantly collected a "protection fee" from him, and that he did not want to go to school again.

December. South China's Guangdong Province. A middle school student was slapped by a group of girls. Her father, who watched the video online, wept as he talked about it during an interview.

May. East China's Shandong Province. One student hit his classmate in the school toilet. The reason? He thought the victim gave him a nickname and reported him to their teacher.

April. Central China's Hunan Province. A group of five followed a primary school girl on her way home. In a hundred seconds, they took turns to slap the girl over 30 times.

Many other videos exist, and these only scratch the surface of the issue. Right now, this is much too serious a phenomenon to be ignored.