The CP5 were and are manifestly guilty, as anyone paying close attention knows. You do not confess with your lawyer and parents present unless you actually DID IT. As stated above, it was known at the time of the trial of the CP5 that there had been another attacker, whose DNA was found on the person of the victim. The jury knew of this mysterious person and STILL convicted the CP5 unanimously. When that final attacker confessed in prison (he was LWOP), it did nothing more than fill in the last piece of the jigsaw puzzle, and did nothing to exonerate the CP5.
Except in the Leftist universe.
And for general information, Donald Trump is a HUGE fan of Ann Coulter, and he has come out publicly on this case, regurgitating her thoughts and writings, and not based on his own research.
While there have been many other homicides in New York, none got this level of attention, and NONE resulted in such a grotesque miscarriage of justice. The case is unique and eminently newsworthy, and THAT is why Trump has spoken of it publicly, and not because he is a "racist."