The Staple Singers: God Bless the Children

This plays over the final few minutes of Hal Ashby's The Landlord, one of the greatest gentrification themed movies out there - are there others? - and one containing the following gem of an outburst, from a son to his mother -

"I'm 29 years old and I have run away from home! Now doesn't that strike you as being a little bit sick?!"