during the chicago racial violence against blacks, the press learned from department of justice officials that the iww and bolsheviks were "spreading propaganda to breed race hatred". fbi agents filed reports that leftist views were winning converts in the black community. one cited the work of the naacp "urging the colored people to insist upon equality with white people and to resort to force, if necessary. j. edgar hoover, at the start of his career in government, analyzed the riots for the attorney general. he blamed the july washington, d.c., riots on "numerous assaults committed by negroes upon white women". for the october events in arkansas, he blamed "certain local agitation in a negro lodge". a more general cause he cited was "propaganda of a radical nature". he charged that socialists were feeding propaganda to black-owned magazines such as "the messenger", which in turn aroused their black readers. he did not note the white perpetrators of violence, whose activities local authorities documented. as chief of the radical division within the u.s. department of justice, hoover began an investigation of "negro activities" and targeted marcus garvey because he thought his newspaper "negro world" preached bolshevism. he authorized the hiring of black undercover agents to spy on black organizations and publications in harlem.