The Times and Bob Secter are to be congratulated on this necessary, important and comprehensive summary.
The findings are not surprising.
Neither free enterprise, communism, education or any other catchall, are guarantees against racism, black, white, or otherwise, which are anchored in man's intuition and feelings as often opposed to reason.
Accordingly, free speech and press, which are anchored in the 17th-Century idea that man is controlled by reason, and that reason will prevail in an open marketplace of ideas, are insufficient protection against racism.
That is the lesson implicit in Freud's findings and exemplified by the Third Reich, World War II, the Holocaust, the slaughter of the Ibos by the Nigerians, your article, and innumerable other proofs.