In this image taken from Sunday, Oct. 28, 2018 surveillance video footage run by China's CCTV via AP Video, a passenger strikes a bus driver with an object moments before the bus plunged off a bridge into the Yangtze River in Wanzhou in southwestern China's Chongqing Municipality. Police say a brawl between a passenger and a bus driver was the cause of the bus plunging off a bridge and killing more than a dozen people in southwestern China on Sunday. (CCTV via AP Video)