1. A term in Southeastern United States English to describe poor white trash, derived from the Scottish meaning of the verb "to crack," which, in this sense denotes ostentation.

"I should explain to your Lordship what is meant by crackers; a name they have got from being great boasters; they are a lawless set of rascalls on the frontiers of Virginia, Maryland, the Carolinas and Georgia, who often change their places of abode." 1766, G. Cochrane

2. In more general and contemporary U.S. usage, the term has become an ethnic slur for all Americans of Northern European decent.

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