Jim Brown tells TMZ Sports he's got a big problem with the 8-year-old football team that took a knee during the national anthem this week ... saying, "I thought that was exploitation."
The NFL legend has previously spoken out against Colin Kaepernick's national anthem demonstration and feels the kids who emulated him in Illinois on Sept. 17 were manipulated by coaches and parents.
"I don't personally do anything against my country, against my flag, against my national anthem," Brown said during an outing in Beverly Hills.