OWS may be a fairly disparate group, but given that it was organized by Leftists angry at everybody but the real culprits, namely the Federal Government, the Federal Reserve, and Corporate Socialists, their overarching theme seems to be that they want more goodies (free goods and services) extorted from productive people and transferred to them via the government.
Libertarians don’t want the government taking anything away from anybody other than what is needed to fund its legitimate Constitutional duties. (And those are precious few.)
Yes, we are willing to pay the costs of freedom. I missed the part about how invading Iraq protects our freedoms.