W.I.P
About
Chimpout is a term used (often in 4chan) in order to refer to angry behavior by black men, Although the term has grown to signify any type of irrational violent behavior regardless of race or affiliation.
The word has gained popularity on the internet among white supremacist.
Origin
Earliest use of the word come from white supremacist sites such as chimpmania, Stormfront and chimpout.com