contrary to popular and STUPID belief, brown does not describe those of middle eastern or hispanic descent. those of hispanic descent have their own color - latino, and most middle easterns are of their own color - arab, so arab and brown are not the same ethnic group!
brown people are generally made up of south asians (indians, bengalis, nepal, sri lanka, etc..) and also some of south america, like guyana
"Yo Omar my brown homie lets go and chill at the mall buddy!"
"For the last time you idiot I'm not brown im Arab and PROUD! You wanna hang out with a brown guy so much, go talk to Russell Peters!"
Slang for a Nazi or fascist pig. Derived from the brown shirts worn by the Sturm Abteiling (SA). Brown was the color of the Nazi party in the 20's and 30's, much as red and blue are respectively associated with the Republican and Democratic parties in the US now.
Side note - the Schutzstaffel (SS) primarily wore black uniforms.
Nazi: "I love Hitler. Mexicans suck."
Punk: "Fuckin' brownshirts. Let's bust some heads."
Mexican: "Hell yeah."
Upper management has been trying to fire him from the start, but in order to save his position he ratted on his team lead who tried to save him. That is a John Brown Nose.