Lesbian, gay, bisexual and transgender (LGBT) rights in Portugal have improved substantially in the past decade and are now among the best in the world. After a long period of oppression during the Salazar dictatorship, Portuguese society has become increasingly accepting of homosexuality, which was decriminalized in 1982, eight years after the Carnation Revolution. Portugal has wide-ranging anti-discrimination laws and is one of the few countries in the world to contain a ban on discrimination based on sexual orientation in Article 13 of its Constitution. Since 5 June 2010, the state became the eighth in the world to recognize same-sex marriage. On 1 March 2011 the President ratified the Law of Gender Identity, said to be the most advanced in the world, which simplifies the process of sex