This is great. The majority opinion repeatedly makes the point that DOMA stepped on states' toes specifically to HARM a certain group, instead of help it, and that was unconstitutional. The US shouldn't be in the business of denying rights to citizens that states want them to have.
"DOMA’s avowed purpose and practical effect are to impose a disadvantage, a separate status, and so a stigma upon all who enter into same-sex marriages made lawful by the unquestioned authority of the states."
"When the State used its historic and essential authority to define the marital relation in this way, its role and its power in making the decision enhanced the recognition, dignity, and protection of the class in their own community. DOMA, because of its reach and extent, departs from this history and tradition of reliance on state law to define marriage"
"DOMA seeks to injure the very class New York seeks to protect. By doing so it violates basic due process and equal protection principles applicable to the Federal Government."
Anyway, this is great. People think that preventing gay marriage is somehow taking a stand against homosexuality or something. News flash: gay couples live as married couples whether you like it or not. The only thing banning the marriage certificate does is punish them for being gay, which is ridiculous beyond belief.