MOST HATED? CASEY ANTHONY; O.J. NO. 4

Casey Anthony is officially America's Public Enemy No. 1.

The 25-year-old brunette acquitted of killing her daughter tops a list of the nation's most hated people, beating out loathsome lowlifes like reality-show creep Spencer Pratt, Nadya "Octomom" Suleman - and even O.J. Simpson, a new poll shows.