Players' union chairman Clarke Carlisle presents a BBC documentary called 'Is Football Racist?', to be aired on Monday night, and considers the level of racism in the game is still unacceptable.
"We've done plenty to combat racism in football, but there's still plenty more to do," former Burnley defender Carlisle said.
"There are still areas like the Asian footballers who were denied chances, that need to be stepped up.
"I genuinely believe that if you were good enough you'd get your chance, but there were quite a few people whose experiences blew that out of the water."
Several current black England players were contacted by Carlisle to give their views on the subject, but all refused to speak out.
"We didn't get a real answer from players about why they were so reluctant to talk," Carlisle said.
"My personal opinion is that they don't because nobody wants to be seen to be a troublemaker by stirring things up or to be perceived as a militant activist.
"Professional footballers earn fantastic wages but their average career span is only eight years.
"You're not going to stick your head above the parapet, even if your perceived apprehensions are founded.
"If they're worried it will affect their career, why would they rock the boat?"