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a person who has entered the U.S. illegally, mainly from Mexico, occasionally Central or South America, and is a burden to society, i.e., here to commit crimes and exploit the benefits offered to legal citizens which are earned through paying city, state, and federal taxes. :)
"....and it is estimated that a half-billion dollars are spent every year on these criminaliens for emergency services, welfare, WIC programs, incarceration, graffiti-removal, et cetera, in California alone."

Thanks to 'criminaliens' even black and white Californians now know how to park on their front lawns and create candle-memorials at all fatal, auto accident sites. Gracias.
by Jessica Alba, ex-mexican January 27, 2010
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Aug 4 Word of the Day
Man's greatest invention, brain bleach removes bad memories and general DO NOT WANT moments. Every household should have a few gallons.
1: Dude, I just walked in on my parents.
2: Have some Brain Bleach!
by Andikun November 06, 2007
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A person who immigrates to the U.S. illegally thus known as a criminal act. The opposite of a law-abiding legal alien.
The govenor of Massachusetts, Deval Patrick welcomes "criminaliens," and wants to give them drivers licenses, jobs, in-state tuition, and housing on behalf of the taxpayers money.
by Mr. Foot February 06, 2009
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A racial slur that is directed towards illegal immigrants. The coin phrase is based on an ideology that is rooted in a historic context-- The age of acceptable RACISM- conscious, or not.

An example of the word "Criminalien" that provides a very nice elaboration can be found on youtube-- C & P into youtube search

"The Most Racist Comments About Mexicans Ever Allowed On-Air"
by Ti33 August 19, 2009
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