Social media pages belonging to Keaton Jones' estranged father are littered with white supremacy propaganda, although he hasn't posted in a while ... because he's locked up in a Tennessee jail.

The father's name is Shawn White and his Facebook features multiple memes with sayings like, "HOLY F*** I LOVE BEING WHITE," "Keep Calm and be White Pride," and "Aryan Pride."

The memes we found were all posted in 2014. There was also a selfie profile pic that shows Shawn shirtless with "PURE BREED" tatted on his chest ... and "WHITE PRIDE" on his stomach.

He also has neck ink that reads, "CWB" -- a common abbreviation for a gang called Crazy White Boy.

According to docs, obtained by TMZ, White's been in Knox County Jail since May 2015. He's locked up on a probation violation related to a 2012 aggravated assault conviction, and scheduled to get out in 2018.

It's unclear what, if any, relationship Shawn has with Keaton. He last posted a pic with Keaton and his sister in January 2015. We didn't find any record of Shawn marrying Kimberly Jones and, obviously, Keaton has his mom's last name.