"It was part of a plan put in place in 1928 by the Comintern—the Communist International, whose mission was to spread the communist revolution around the world. The plan initially called for recruiting Southern blacks and pushing for “self-determination in the Black Belt.” By 1930, the Comintern had escalated the aims of its covert mission, and decided to work toward establishing a separate black state in the South, which would provide it with a beachhead for spreading the revolution to North America."
It's driven by Communist Party strategy. Instigating race war has been part of their strategy since the 1920s.
Even the left-wing Atlantic magazine admits this :
https://www.theatlantic.com/international/archive/2017/10/russia-facebook-race/542796/
"It was part of a plan put in place in 1928 by the Comintern—the Communist International, whose mission was to spread the communist revolution around the world. The plan initially called for recruiting Southern blacks and pushing for “self-determination in the Black Belt.” By 1930, the Comintern had escalated the aims of its covert mission, and decided to work toward establishing a separate black state in the South, which would provide it with a beachhead for spreading the revolution to North America."