Joe Gallo was a great poseur after he got out of prison in 1970. One of his poses was as a "friend" of blacks and Hispanics. He recruited both in prison to beef up his organization, but for one purpose: so he could muscle Joe Columbo into giving him a huge chunk of money and territory when he got out. He didn't do it out of any "love" of minorities, or because he saw that "times were changing." But his charade with blacks and Hispanics helped him get popular with politicians and celebrities who were fascinated with him as a would-be "civil rights-conscious Mafioso." Yeah, sure.
The Mafia has always been highly bigoted. The most realistic utterance in GF is by the Don of Cleveland at the Dons' meeting. He wants drug trafficking confined to "the dark people, the coloreds...they're all animals anyway, so let them lose their souls to drugs." That's how the Mob operates.