I don't believe reclamation has a particular political definition, though leftist projects will often speak of reclaiming things from capitalist culture, which is "reverse recuperation" or what the Situationists called détournement.
You must not merely criticize, but offer a positive alternative. Capitalism has not coopted communism except it the most superficial sense (selling books, merchandise, and so on). It is all those works that bemoan capitalist conditions but offer no solution which are used to enforce capitalist realism.