If they want to infect the minds of the population, and make the people BELIEVE that we are in a a pandemic and global apocalypse, then they use the props to trigger this fear.
So the cabal is drawing on a lifetime of movies [programming] which use the mask as a symbol of chaos, to instill fear. It's an ancient tool to create an aura of fear. The more masks people see in the streets, the more people believe humanity has lost.
Q mentions FEAR often (and often capitalizes it). Fear is a weapon. It's a spiritual and psychological weapon the Cabal uses over the People.
To remain silent _living in fear [controlled] is to remain powerless. ~ Q