The clip features foreigner getting in an argument, spitting on a Chinese man, and then riding away on his bicycle. I do not know what the dispute was about or what either said. However, this dispute should not have ended this way.
Stuff like this not only makes the lives of your fellow foreigners even more difficult and unpleasant, it's shitty way to carry yourself and interact with others, regardless of their nationality.
Stay Classy, White Guy [Beijing Cream]