The Mississippi Aryan Brotherhood is a large racist prison gang based in the Mississippi state prison system. Despite the similarity of its name, it has no connection to the "original" Aryan Brotherhood, based in California and the federal prison systems. The logo of the Mississippi Aryan Brotherhood consists of a highly-stylized rendition of a combined A and B.
The New Black Panther Party for Self Defense (not related to the original Black Panther Party) is the most extreme organized racist and anti-Semitic African-American group in the United States. Its symbol consists of a leaping panther (an image appropriated from the original Black Panthers) superimposed over the continent of Africa.
The "Northwest American Republic" is a fictional construct created by Harold Covington, a long-time fringe figure in the neo-Nazi movement. It is based on the so-called "Northwest Imperative," a longstanding call by some white supremacists for white people to move to the Pacific Northwest and establish their own country.