It has been nearly three decades since Fred Goldman and daughter Kim Goldman were transformed almost overnight into reluctant celebrities amid almost inconceivable grief for Ron Goldman — their son and brother, respectively. Ron was a 25-year-old tennis instructor and waiter who was murdered, along with Nicole Brown Simpson, outside her Brentwood home on July 12, 1994. Ron was there to return a pair of sunglasses that Nicole’s mother had left at his restaurant — but in a…