The report was released in 1968 after seven months of investigation. Rather than attributing the rioting to a small group of outsiders or trouble-makers ("riffraff") as many prior riot investigations had done[2] or to radicals or a foreign conspiracy as almost three-fourths of white America believed,[3] the Commission concluded that the rioting was a response to decades of "pervasive discrimination and segregation."
https://en.wikipedia.org/wiki/Kerner_Commission
3 / 4 of whites knew of a conspiracy and they hid it