Black Gas Masks for costume

We have bought two black 'soviet style' gas masks for our antagonist henchmen to wear. So far we believe that these gas masks will feature in two scenes: the "antagonist establishment scene" and the "interrogation scene". The aim of the masks is to try to detract from the emotion seen in the antagonists, and to dehumanize them so as to take away any positive feelings towards them as well as to strip them of attention and any level of importance.