Symbols are important, in order to know what your dealing with or even what kind of power and beliefs symbols have. Several symbols have correct shape and its inverse shape, good/Light or evil/Dark
Like:

The Good

The Evil, 2 points (also called 2 Horns)

Good/Light

evil/Dark

It is so important to get the meaning and what type of symbol you are looking at, instead of assuming that all symbols are one or the other. Just because a symbol is made famous by certain actions, does not mean that the true meaning is the same.