PARIS – Paris riot police fired tear gas Saturday to disperse a largely peaceful but unauthorized protest of police brutality and entrenched racism, as France’s minorities increasingly push back against a national doctrine of colorblindness that has failed to eradicate discrimination.In London, far-right activists and soccer rowdies scuffled with police while trying to “guard” historical monuments that have been targeted recently by anti-racism protesters for their links to slavery and British colonialism.The events in the two European capitals reflected the global emotion unleashed by the death of George Floyd in the United States and the ensuing reckoning with racial injustice and historical wrongs.