At the time a lot of blacks had small farms that had been worked out or were too small to make a living on so they hired out to larger farms to do the work and get extra money besides what their farm brought in.
Other blacks had left the farm and moved to the cities where they hired out as handymen.
A lot of farm hands are jacks of all trades so one person could do the same work it would take 4 or 5 different union members to do.
They were hoping the blacks would leave the cities and move back to the farms, but they didn’t.
After the GS they didn’t need to do extra farm work to get spending money so they wouldn’t do it.
Hello illegals.
Or, were LBJ & Co clever enough to know that they were creating a permanent entitlement society, void of the need for a breadwinner/father, and offering a perpetual voting bloc?