The Supreme Court rules that the Defense of Marriage Act is unconstitutional in a 5-4 vote. Celebs share their thoughts on Twitter including Leonadro DiCaprio, who says, "Historic day. Well done #SCOTUS. RT @GLAAD: Supreme Court affirms that #DOMA is unconstitutional!" Ben Affleck adds, "Big news from the Supreme Court. Goodbye #DOMA #Prop8. Hello #equality."