Stephen Miller would have ICE agents (and the rest of us) believe that they have “immunity” to perform their “duties.”
This is, of course, false. Depriving any person (not just citizens) of their rights “under color of law” is its own crime. But it is in that light that we should view their position on face masks as admitting that they know they have it wrong:
The administration’s perceived need for face coverings evocative of Iranian secret police and Russian security agents helps us recognize that assertions of state supremacy and citizen insignificance are claptrap…
Source: All the king’s masked and anonymous henchmen
If they were immune, they’d not hesitate to show their faces. The fact that they feel the need to keep them hidden makes it very clear that they know they’re totally exposed in a legal sense.