You should setup a youtube channel and ask people to send you videos they take of cops.
We have a youtube channel prepared at
http://www.youtube.com/user/copleaksand have since February.
While the goal of the site is to find whistleblowers, the blue wall of silence runs deep, and therefore I've mostly just made it a rant blog.
If I got a decent video sent my way, obviously I would host it immediately.