Gay activists celebrate with champagne in front of the Portuguese parliament in Lisbon on January 8, 2010 after Portugal's parliament today approved plans to legalize civil marriage for gay couples. Lawmakers rejected proposals to allow gay couples to adopt, but otherwise the bill passed with little public controversy in what has traditionally been one of Europe's most socially conservative countries. By Francisco Leong/AFP/Getty Images.
Perhaps because they understood that marriage equality is, in fact, a socially conservative reform.
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