The way they were standing around him made me feel uneasy. That and a few things the guy in the shirt did that I'm used to seeing in "the hood." He did the "look away", "the face grooming", and the positioning of the 3 guys would have made me feel really uneasy. The positioning of the guys would have made me feel uneasy. I'll have to check some of my videos to see how I stand around a group of people. The look away is common in the streets because people do it right before they do something bad as if they are scoping the area to make sure that no cops are around. The "look aways" will appear to be an out of place look in a conversation setup like in the video. The face grooming is popular along with biting or tucking the lower lip. The other one is the lean.
I wish there was some audio. It would be interesting to hear the tone of the conversation.