A private think tank my ass! Homeland Security has been orchestrating police activity from the beginning. And it's been that way for every mass movement since at least WW1.
The state is an organ of capital, and NPR is an organ of the state. Follow the link to text and audio of a psy-op.
http://www.npr.org/2011/12/26/144283217/with-occupy-protests-police-aimed-for-restraint