When I used the word "contract", I couldn't think of the word "negotiation". Maybe the perp is holding out for money, releasing a family member from jail, lowering a family member's sentence...all just "out there" thoughts.
Here is another "out there" thought..could the perp be an undercover cop gone bad? This is NOT to be disrespectful to policemen/women, but there can be individuals that go "south" in ALL lines of work. Maybe "outing" the undercover cop would put even more people in harm's way?
Okay, thanks. IDK, that's a thought worth considering. You're right, there are rogue cops all over the country, so it's a possibility. That could explain the video having the potential of tainting a jury.