From his IMDB.
At 16, Wahlberg approached a middle-aged Vietnamese man named Thanh Lam on the street and, using a large wooden stick, knocked him unconscious while calling him "Vietnam fucking shit". That same day Wahlberg also attacked a second Vietnamese man named Hoa "Johnny" Trinh, punching him in the face. He believed he had left his victim permanently blind in one eye. Trinh was interviewed in December 2014 by the Daily Mail,who revealed that he had already lost his eye during the Vietnam war, was not severely injured by Wahlberg, and did not know the identity of his assailant prior to being contacted by the media.