A (better than I expected) Wikipedia page that attempts to explain Projection

This wikipedia page on Projection is pretty good.

Here are some bits I liked but I'll TRY !! and explain it in my own word in another post.

Projection (or projection bias) is a defense mechanism in which one attributes to others one’s own unacceptable or unwanted thoughts or/and emotions. Projection reduces anxiety by allowing the expression of the unwanted subconscious impulses/desires without letting the ego recognize them.

Peter Gay describes it as "the operation of expelling feelings or wishes the individual finds wholly unacceptable—too shameful, too obscene, too dangerous—by attributing them to another."[1]

The concept was anticipated by Friedrich Nietzsche:
He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you."

Projection is the opposite defence mechanism to identification. We project our own unpleasant feelings onto someone else and blame them for having thoughts that we really have."

A defense mechanism in which the individual attributes to other people impulses and traits that he himself has but cannot accept. It is especially likely to occur when the person lacks insight into his own impulses and traits."

Attributing one's own undesirable traits to other people or agencies."

The individual perceives in others the motive he denies having himself.

Thus the cheat is sure that everyone else is dishonest."

People attribute their own undesirable traits onto others.

An individual who possesses malicious characteristics, but who is unwilling to perceive himself as an antagonist, convinces himself that his opponent feels and would act the same way."