"Maude's Dilemma Pt. 1" "Maude's Dilemma Pt. 2" - Maude

Believe it or not, Maude also had two episodes about abortion. Maude, played by Bea Arthur, finds herself pregnant at 47-years-old. The episodes follow her while she tries to figure out if she could keep the baby or not. This was aired in 1973, which is pretty impressive since the stances on abortion were generally against the surgery. After it was aired once, over 30 major networks refused to ever air it again. 

"Fat Like Me" - Daria

Daria was never really controversial, but this episode totally aged out. In "Fat Like Me" a character faces discrimination after she gains weight. Nickelodeon decided to stop airing the episode after a while since there was a negative correlation between gaining weight and popularity.