Who knew Inigo Montoya could sing?

From Wikipedia:
You've Got to Be Carefully Taught" is a show tune from the 1949 Rodgers and Hammerstein musical South Pacific.

South Pacific received scrutiny for its commentary regarding relationships between different races and ethnic groups. In particular, "You’ve Got to Be Carefully Taught" was subject to widespread criticism, judged by some to be too controversial or downright inappropriate for the musical stage. Sung by the character Lieutenant Cable, the song is preceded by a lyric saying racism is "not born in you! It happens after you’re born..."

Rodgers and Hammerstein risked the entire South Pacific venture in light of legislative challenges to its decency or supposed Communist agenda. While on a tour of the Southern United States, lawmakers in Georgia introduced a bill outlawing entertainment containing "an underlying philosophy inspired by Moscow." One legislator said that "a song justifying interracial marriage was implicitly a threat to the American way of life." Rodgers and Hammerstein defended their work strongly. James Michener, upon whose stories South Pacific was based, recalled, "The authors replied stubbornly that this number represented why they had wanted to do this play, and that even if it meant the failure of the production, it was going to stay in."