The word is spelled gobbledygook and does not have racist origins (although they are fowl). Here is the etymology:
also gobbledegook, "the overinvolved, pompous talk of officialdom"
[Klein], 1944, Amer.Eng., first used by U.S. Rep. Maury Maverick,
D.-Texas, (1895-1954), a grandson of the original maverick and
chairman of U.S. Smaller War Plants Corporation during World War II.
First used in a memo dated March 30, 1944, banning "gobbledygook
language" and mock-threateaning, "anyone using the words activation or
implementation will be shot." Maverick said he made up the word in
imitation of turkey noise. Another word for it, coined about the same
time, was bafflegab (1952).
Edit: As JLG says, "Wikipedia's entry is pretty good, too.
Gobbledygook or gobbledegook (sometimes gobbledegoo) is any text
containing jargon or especially convoluted English that results in it
being excessively hard to understand or even incomprehensible.
"Bureaucratese" is one form of gobbledygook.
There are two distinct
and opposite cases. One is that incomprehensible material is actual
gibberish. In the other some abstruse material is either ineptly
presented or is subjectively perceived to be gibberish due to a lack