Court TV did a story on this case this evening. All of the commentators said that they think this is a case where the victim was being stalked. 5/6/20 New Video of Ahmaud Arbery's Death Goes Viral - Court TV
According to this the person who filmed was a friend of the McMichael's who helped them chase down and trap the victim. Video of Brunswick shooting made by one of victim's pursuersI don't want to post a link to the video, as I'm sure many can find it themselves, but I really want to know why the person filming was filming, why they have no reaction and what is before and after in the video that has been released. My opinion only: it seems that person filming was aware of or involved in the vigilatism that day.