Wentworth Miller has come out as gay.
The Prison Break star decided it was time to publicly reveal his s3xuality after being invited to attend a film festival in Russia.
"Thank you for your kind invitation. As someone who has enjoyed visiting Russia in the past and can also claim a degree of Russian ancestry, it would make me happy to say yes," Wentworth, 41, says in a letter to Maria Averbakh, director of the St. Petersburg International Film Festival.
"However, as a gay man, I must decline."
"I am deeply troubled by the current attitude toward and treatment of gay men and women by the Russian government," he continued in the letter, posted on GLAAD's website.
"The situation is in no way acceptable, and I cannot in good conscience participate in a celebratory occasion hosted by a country where people like myself are being systematically denied their basic right to live and love openly."
He also said: "if circumstances improve, I'll be free to make a different choice."
GLAAD spokesman Wilson Cruz praised Miller's actions.
"Wentworth's bold show of support sends a powerful message to LGBT Russians: you are not alone," Cruz stated.
"As people from across the globe continue to speak out against this horrific law, more celebrities and corporations should follow his courageous lead in openly condemning Russia's anti-LGBT law."
Implemented last month, a controversial new law has banned "propaganda of non-traditional s3xual relations around minors," including the public discussion of gay rights and relationships anywhere children might hear it.
The law has been condemned by Russian and international human rights groups as highly discriminatory.