Mirror could also refer to Mirror Neurons.
"Mirror neurons represent a distinctive class of neurons that discharge both when an individual executes a motor act and when he observes another individual performing the same or a similar motor act.
It has been postulated and proved by neuroscientists that the inability of autistic children to relate to people and life situations in the ordinary way depends on a lack of a normally functioning mirror neuron system.[17–19] EEG recordings mu waves from motor areas are suppressed when someone watches another person's move, a signal that may relate to the mirror neuron system. This suppression was less in children with autism.”
www.ncbi.nlm. nih.gov/pmc/articles/PMC3510904/
If one looks at this in a different way (like an autist), one could postulate that mirror neurons are what make mass mind control possible, due to the "monkey see, monkey do" phenomenon.
Also possibly what makes celebrities so celebrated and copied. One can actually see this happening in real-time with the Stoneman Kid Celebs. Notice how the adult celebs quickly jumped on board to validate.
Monkey See, Monkey Do =Mirror Neurons at work.