In the post, 26-year-old Brooklyn Beckham takes a hard line against his world-famous parents - designer and Spice Girls star Victoria Beckham and former soccer star David Beckham.
He accuses them of trying to sabotage his relationship with actress Nicola Peltz, whom he married in 2022. He also writes that the parents control the narrative surrounding the family, and that they care more about the Beckham brand than the family itself.
"From the moment I started standing up for myself, I have received constant attacks from my parents, both privately and publicly. I do not want to reconcile with my family. I am standing up for myself for the first time in my life," he writes.
The Beckhams, who also have three other children, have not commented on their son's post.
