Your account does mention that Williams and Charles 'had throughout been subjected to racist abuse' but offers the opinion that Derby 'sensibly . . . had taken the precaution near the end of withdrawing their black players'.
The policy should be to remove the racists. Isn't racist abuse at matches an offence? If the BBC heard it, why didn't they alert the police? How do Williams and Charles feel about being whisked off as if they were an inconvenience?
If black players are the subject of racist abuse at matches the BBC should show and condemn this, newspapers should make no bones of it, the police should arrest and remove the offenders.