President Barack Obama officially declared his support of same-sex marriage.
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The California Supreme Court ruled that the state ban on same-sex marriage was unconstitutional.
The state of California began issuing marriage licenses to same-sex couples.
Thailand became the first Southeast Asian country to legalize same-sex marriage.
The FBI's most wanted man, Osama bin Laden, was killed by the US Navy Seals and CIA operatives in Abbottabad, Pakistan.
Spain legalized same-sex marriage.