Masks are intriguing because they serve some interesting purposes. When you put on a mask, you do one of many things: transform your character, hide your identity, or protect yourself. Everyone has worn a mask at some point in life. When was the last time you wore a mask? How did it feel to have a mask on in that situation?
The concept of character masks refers to the circumstance that, in human societies, people can take on functions in which they “act out” roles, whether voluntarily chosen, by necessity, or forced. In those roles, some or all of their true characteristics and intentions may be partly or wholly masked, so that they appear different from what they truly are – “public face” and “private thoughts, interests and emotions” diverge. Also, their activity may have broader social effects that they would rather not know about, which they wish to be unknown or presented in a certain light, or which they are unaware of, and therefore the effects are mentally disconnected from their real causes.