Talking about black and white thinking in the Psychology area, this subject came to mind. I did not know the history of the White House but now I know more.
Construction of the White House began with the laying of the cornerstone on October 13, 1792, although there was no formal ceremony.[15] The main residence, as well as foundations of the house, were built largely by enslaved and free African-American laborers, as well as employed Europeans.[16] Much of the other work on the house was performed by immigrants, many not yet with citizenship
https://en.wikipedia.org/wiki/White_House
Kind of appropriate for this Labor Day.