Geoffrey P. Alpert, a professor of criminology ... at the University of South Carolina, said the chaotic scene, and its handling by law enforcement, raises 'a lot of red flags.... The contradictory orders are confusing and may have been a strong influence,' Alpert said. 'The speed is slow and doesn’t appear threatening. Could the officer have moved away? At worst, all he has to do is step aside. We call it officer-created jeopardy.'... DHS did not publicly acknowledge that one of its agents had fatally shot Ruben Martinez ... until last month, when a lawsuit brought by a nonprofit government watchdog group unearthed the agency’s narrative of the incident.” A CBS News story is here.