Back in the day of cowboy stories the villains covered the lower part of their faces with kerchiefs and nobody could recognize them.
But when I see people I know with kerchiefs covering half their faces I easily recognize them. And the modern masks covering noses and mouths are even less likely to hide people’s identities.
It used to be the bad guys who wore masks.
Now it’s the law-abiding citizens who wear them and the bad guys, willing to spread the corona virus to others if they have it and don’t know it, who don’t.