One should remember that the Social Justice movement is built upon ideas of intersectional feminism, which has permeated every corner of the American University system. This is the premise that white heterosexual men are responsible for all the problems of everyone, everywhere, and all the 'oppression' needs to be taken as whole.
If the trend continues, cultural humility training is coming soon to a public school near you. Given the maturity of their ideas, probably a grammar school.
As a white man, I will submit to cultural humility training only if someone can demonstrate to me that women, minorities, and transsexuals have created a separate culture as prosperous, productive, and free as the one that white men have created.
In the meantime, since no such culture (or universe) exists, I invite them all to suck my white privilege.