Why was Kick streamer JohnWhatsGoingOn slapped during Vietnam 7-Eleven livestream?

Kick streamer JohnWhatsGoingOn was slapped by an Indian man inside a 7-Eleven in Vietnam during a livestream after a heated confrontation. In the video, one of the Indian men can be heard telling the streamer not to film him without his consent. However, JohnWhatsGoingOn continues recording and talking to him.