Why are mulattos (black fathers only) even worse than full-breed negros?

In my experience, they are always the most ignorant, racist, mentally ill, sociopathic mf'ers. Why are these half-breeds so much worse than the purebreds?

Note, that this only applies to the mulattos with black fathers. Mulattos with White fathers are basically White in the way they act, speak, and behave. A male mulattor with a White father is basically a White guy with a tan.

There's this mouthy mulatto (half-Asian, half-black) in my neighborhood. Looks like there house might be for sale, so the ****-stain is hopefully on his way out.