The video begins with the white man already standing too close to the black man. Remember, that is the black man’s front door.
Then (watch his feet) the white man takes a step even closer toward the black man, who instinctively pushes him back and takes a step back himself.
I’m only using the terms “white” and “black” to describe them in a quick way. We could say “man in the green shirt” and “man in the white shirt.” All that matters is, one guy went to the other guy’s front door, argued with him, got up real close to him, and called him names.
There appears to be a back story. Then again, other neighbors claim this guy harasses everyone. But, let’s wait and see which back stories are true. As is, for now, we can only judge what we see in that video.
Must take rain check on this discussion. My internet is conking out every time I try to watch the video. Later.
After reviewing the video more carefully and listening to the hostile exchange, you are right that he was already standing too close. Then black man pushed him, and white man dared black man to put hands on him again, and said that black man had already put hands on him twice (the first time not on camera), and said he would press charges. From what little I gather re context, black man was defending one of the two fellows behind him, and told white man that he was always harassing people. Black man speaks with Caribbean lilt. White man seems to be habitually contentious fellow.