Bad argument against the protesters at Wall Street

The excellent blog Carpe Diem made what I believe to be a poor argument against those protesting at Wall Street (see picture below).

The Americans protesting against what they believe to be corporate corruption--presumably brought about by lax regulation--cannot be ridiculed for owning goods produced by the private sector, because they can adroitly criticize libertarian bloggers for their consumption of public goods like roads and police.