IIRC this ad was ~1971-ish. I was born in 71, GenX, & saw this when I was a kid. Back then it was just another ad that made a splash, like the Crying Indian anti-littering one, or Mikey Likes It cereal one.

Then later when coming back across it, 90s-00s, I felt vague nostalgia for childhood because it was attached to that, not the message of it really.

Now though it repulses me as a Diversity NGO/Globalization/Consumerist psyop example. The song is catchy though.