Similar to the word nigger - a racially defining term that is inherently racist. However, unlike the term nigger, cracker is not remotely taboo to use against Caucasians by Americans of African descent as nigger is when used by Caucasians to identify Americans of African descent. See double standard, reverse racism.

Originally the white slave driver because he would "crack" the whip, hence the noun cracker.

Noun. Slang word used to refer to those of European ancestry. The word is thought to have either derived from the sound of a whip being cracked by slave owners, or because crackers are generally white in color.

opposite of nigger, an insult to whites... except white people aren't dumb enough to walk around calling each other that word because it's intended to be demeaning

A racist insult used by blacks against white people that seemingly isn't wrong, yet it is illegal for us to defend ourselves and call them darkies or nigger. Racism against whites is racism just the same, people. Get some common sense. If black people think they are the shit like they're better than everyone else, they are mistaken.
No one is fuckin better than anyone they are equal, until your actions or reputation lowers your social status and respect, of course.

An unsweetened biscuit.
Ha!

Racist term for a white person

1:A firecracker
2:A thin, crisp wafer
3:One whom cracks illegally into another's computer or network
4:A racist term used against Caucasians/Whites