Chuck at GLP has noted that the “flash rob” phenomenon has been noted by him and Fox News, but has not been widely noted elsewhere.
One the other hand the first video result come from Good Morning America, so the term must be becoming more popular rapidly-
The idea that minorities have restricted access to the internet and thus are at a social disadvantage is widespread, it has even been adopted by the UN. And yet by actual use, minorities use the internet more through mobile devices, and are big users of Twitter.
The internet empowers people, but you can only empower people to do more of what they already want and are motivated to do. In the case of blacks this seems to be to steal cheap alcohol, food, and clothing.