Tim pool thinks it was done to turn occupy Wall Street against eachother with identity politics when they were initially focusing on classismSort of. The push for enforced "diversity" goes back decades, and that does include the use of both private and public funds. However, it was a very slow drip, and any real big bursts were obvious and mocked.
Something happened around 2010 that just opened the floodgates. Not sure what, but it went from a rivulet to a flash flood that has put the entire valley under water.