You made the assertion, now back it up with some facts. That or shut the hell up. The choice is yours.
Especially since a newspaper was instrumental in getting this video released. How many are working to get video of law enforcement being attacked by dogs?
That should be you since you insist on see some.
Are you really going to troll now on the lunatic insistence that law enforcement are not attacked by dogs??
For real??
A simple google news search shows you should shut up.