It's not all blacks. This is basically the black underclass not being properly disciplined.
In the last fifty years the worst elements of the black underclass have been enabled by liberal pols who prefer to overlook their pathologies or blame them on white people.
It reminds me of the situation in Soviet Russia under Stalin when the communists allowed the worst elements of society to tyrannize the law-abiding citizens.
From Solzhenitsyn's "Gulag" trilogy.