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1.
What the Republicans have turned themselves into. Especially at the lower level, brown shirts are a collection of thugs who get quite annoyed at those who oppose monkey boy.
New brown shirts accuse those who don't like monkey boy of everything, from causing bad hair days to treason.
by MrClean March 12, 2005
 
2.
The new uniform of the Republican party. Wearers of this uniform tend to also be jack boot wearing thugs.
Brown shirt Republicans are a collection of goons who cannot stand things like civil rights. These people tend to think that they are better and holier than everyone else.
by MrClean March 14, 2005
 
3.
Soldiers in Hitler's storm trooper army, SA during the Nazi regime. They were called this because of the colored shirts they wore.
To call someone a brown shirt is to call them a Nazi soldier, usually hinting that they oppose human rights or freedom. This is a very serious insult, and in forums is used to Flame someone.
Hitler used many different forces to accomplish his goals when he rose to power. One of these forces were the SA, or Storm Troopers. The SA soldiers were called Brown Shirts.

"I don't like how that guy disagrees with my philosophy on <idea>. I'm going to call him a Brown Shirt so people associate him with Nazis, and his ideas are disregarded."
by Bigscarymonster November 20, 2006
 
4.
A shirt that is brown in colour
Bob is wearing a brown shirt today.
by Brownie January 17, 2005
 
5.
Soldiers in Hitler's storm trooper army, SA during the Nazi regime. They were called this because of the colored shirts they wore.
To call someone a brown shirt is to call them a Nazi soldier, usually hinting that they oppose human rights or freedom. This is a very serious insult, and in forums is used to Flame someone.
Hitler used many different forces to accomplish his goals when he rose to power. One of these forces were the SA, or Storm Troopers. The SA soldiers were called Brown Shirts.
The Brown Shirts will harass you if they hear you saying "that."
by thefirebuilds December 07, 2008
 
6.
Originally used to describe the original members of the Nazi Party who would wear brown uniforms to meetings and events before Hitler came to power.

Now used as a derogatory term for police, FBI or other law enforcement agents or anyone in authority.
Hide the stash man here come the brownshirts.
by jd January 03, 2005
 
7.
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."
by German Major Antifa April 22, 2009