NFL legend Jim Brown tells TMZ Sports he had tremendous respect for John Singleton -- not only because he was incredibly talented, but he used his talents to bring communities together.
"One of a kind," Brown said on the way out of Singleton's funeral in L.A. on Monday ... "Loved his people. No negatives."
We couldn't find any evidence that Brown and Singleton ever worked on a project together -- seems the Hall of Famer just admired him for everything he accomplished.
In fact, when we brought up Singleton's resume -- and his most famous film "Boyz n the Hood" -- Brown talked about the impact he had on America.