Der Trihs’s comments are probably exaggerated, but there is a strong element of truth in them.
By the time of the riots that began around 1966, blacks had been subject to a lot of anti-wealth violence. Tulsa stands out, of course, but there was a lot more–some direct violence, some financial violence.
The riots of the early 1920s were the culmination of years of similar events and they tended to be directed, not against the poorest blacks and the “criminal elements,” but against the wealthier sections of the black communities. Springfield, IL, Duluth, MN, Chicago, and other often resulted in the destruction of the black middle class. In 1943, in the first Detroit race riot, whites who did not want to live near blacks in Federal housing, (not poverty housing, but war production housing), rampaged for days, almost ignoring the public housing over which they were supposed to be angered and attacking middle class neighborhoods. The police reported, afterward, that the “colored people” had finally settled down, as if they were the rioters.
1943 was as close in memory to 1967, (Detroit’s next big riot), as the Reagan years are to us, today. Much of the earliest violence was directed, (not necessarily with much thought), against white store owners who were perceived to be robbing the black community. Once the fires got started, of course, the black neighborhoods bore the brunt of the flames.
In addition to the physical violence were other events. During the Great Mississippi Flood of 1927, the whites were escorted out of the flooded region while the blacks were herded onto levees and forced to camp, surrounded by flood waters, with few provisions. When the waters receded, the blacks were not permitted to return to their homes to recover their losses, but were compelled to act as forced labor to clean up the white neighborhoods while their own property rotted.
During the 1930s, when blacks and whites competed to sell farm goods, black farmers were inhibited from equal access to markets and then their farms were claimed as the result of foreclosures and tax liens while many white farmers who had not been kept away from markets were permitted to use their revenue to purchase the blacks’ lands.
In the industrial North, immigrants were given preferential hiring over blacks, hence the origin of the phrase, “last hired, first fired.” Until the unions stopped the practice, companies in a soft market would routinely fire blacks, then hire immigrants to replace them when the economy turned up again. (And a great many unions never challenged that practice, allowing that behavior to continue well into the 1960s.)
Those actions sent a strong message that there was little point in trying to accumulate wealth.