Peran edith windsor dalam upaya penghapusan diskriminasi terhadap homoseksual di Amerika serikat : studi kasus gugatan Edith Windsor terhadap pasal ketiga Defence of Marriage ACT (Doma) tahun 2013 = The role of Edith Windsor in effort elimination of discrimination against homosexuals in the United States : a case study of article third lawsuit against windsor defense of marriage ACT (Doma) in 2013