What Marcuse is calling for here is the censoring of speech as a means of moving society toward a more just and equitable state. To allow speech that presents the injustices of the status quo—economic, sexual, racial, etc.—as legitimate or even natural is to offer support to those injustices. It therefore behooves the left, of which Marcuse is of course the spokesperson, to work toward closing down the avenues and opportunities for such speech.
