An acronym for Red Anarchist Skinheads. The RASH are one of many different groups of skinheads. Members of this group contain: anarchists, communists, marxists, and other extreme lefts. The RASH reject all forms of racial prejudice and have no toleration for Nazis.
guy 1: Look at Eduardo, he's a skinhead who hates blacks, mexicans, and other minorities.
guy 2: No dude, he's a RASH.