When you are in the streets, you try to act as tough as possible if you are in a fight. A lot of people also try to act as dangerous as possible and have some type of weapon in their hand. In this video, one of the guys in the video is carrying around a large liquor bottle in his hand which can potentially be very dangerous. You can either knock out or stab somebody with the bottle depending on what you do.
There is a natural sense of caution when somebody has a bottle in their hand and in this video, the man without the bottle in his hand smartly keeps his distance at first. You can never be too careful if you are in that position. There is actually another man that seems to be trying to mediate the situation, but you can tell that he does not want to get hurt himself. On the next page, you can see this confrontation and also what the outcome is by watching the video.
(click on the page #2 tab below to see the fight with the man with a bottle in his hand)