Roberts, alongside other black football players including Rio Ferdinand, boycotted the awareness campaign last weekend by refusing to wear the group's T-shirt and the 34-year-old has insisted that the football authorities need "to do better" to clamp down on racism.
When asked whether we would wear the T-shirt at the weekend, Roberts said: "No, I won't. That's my own choice.
"If it was a T-shirt from another organisation, I wouldn't have worn that either.
"This is not an attack on 'Kick It Out'. I am passionate about the PFA and 'Kick It Out' but they have to do better, we have to do better."
Racism in football has been a much talked-about topic in recent weeks, with Chelsea defender John Terry receiving a four-match ban for using racist language towards Anton Ferdinand and England Under-21 player Danny Rose appearing to be subjected to racist taunts during England's European Championship qualifier last week.