Early 1970s PSA About Racism - "Mixed Company" with Barbara Harris

I originally posted this not knowing the origin, but a fellow TH-camr commented the following:
"Its not a PSA - its a 1974 B movie called Mixed Company with Barbara Harris, Joseph Bologna and Lisa Gerritson (who used to be on the Mary Tyler Moore show)"
--
This part in particular is a pretty awkward scene. The dad, especially. Wow.
--
There is an interesting back-story to where I got all these TV spots:
While working in a TV studio in 1999, I met a very strange, eclectic old man who had a collection of vintage, rare and off-color television spots that he had been collecting in his 40+ years of working in television studios. They were professionally archived from film, so the quality of these images is grainy and discolored-- but also very true to the era.
I begged and pleaded to let me have a copy, and voila -- I have a copy.
There are dozens of crazy spots on this tape. I will upload as many as TH-cam can stomach.
Enjoy!