I came across this excerpt among my emails and thought it worth sharing. It is from an article entitled A Racial Program for the Twentieth Century. It was written in 1912 by by a person named as Israel Cohen and read into the Congressional Record, Vol. 103, 8559, June 7, 1957 by Thomas Abernathy.
"We must realize that our party's most powerful weapon is racial tensions. By propounding into the consciousness of the dark races that for centuries they have been oppressed by whites, we can mold them into the program of the Communist Party. In America we will aim for subtle victory. While inflaming the Negro minority against the whites, we will endeavor to instill in the whites a guilt complex for their exploitation of the Negroes. We will aid the Negroes to rise in prominence in every walk of life, in the professions and in the world of sports and entertainment. With this prestige, the Negro will be able to intermarry with the whites and begin a process which will deliver America to our cause."
An interesting analysis of the quotation, it's disputed authenticity and it's implications can be found here as a basis of introduction for your own research. Also Google Congressional Record Vol. 103 page 8559 June 7 1957 and see what comes up.