The veteran was only referring to the main acting categories, a distinction which appeared to have been lost on Sam.
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His comments evoked anger from openly gay writer-director Dustin Lance Black, who won an Oscar for Milk in 2009, and tweeted Smith to correct him.
"THE POINT: knowing our LGBTQ history is important," he wrote. "We stand on the shoulders of countless brave men and women who paved the way for us."
Following the backlash, Smith tweeted to explain his comments."So hungover. genuinely feels like a dream," he began, before adding: "Second openly gay man to win an oscar or third or fourth or 100th, It wasn't my point ... My point was to shine some light on the LGBT (Lesbian, Gay, Bisexual and Transgender) community who i love so dearly."
- AAP