In 1997 police officer, Justin Volpe brutally beat Abner Louima almost to death after Louima had tried to help a woman getting sexually harassed. Volpe was found guilty of all charges and got 30 years in maximum security.

http://www.nydailynews.com/new-york/sodomized-abner-louima-marries-staten-island-woman-article-1.1213532