British actor Sir Ian McKellan, one of two grand marshals, greets fans before the start of the Heritage Pride March in New York on Sunday.

Scouts prepare their flags before leading marchers in the 41st annual Pride Parade on Sunday in Seattle.

Sir Ian McKellan, left, and Sir Derek Jacobi, right, parade grand marshals and famed actors, wave their hats as they walk hand-in-hand down Fifth Avenue during the Heritage Pride March in New York, on Sunday.

Gabriel Anderson, 11, marches with Scouts for Equality during the San Francisco Gay Pride parade Sunday in San Francisco.

Members of Minneapolis Mayhem Rugby Football Club scrimmage - in formal wear - in Loring Park, as part of the Ashley Rukes GLBT Pride Parade on Sunday in Minneapolis. The Associated Press

Seattle Mayor Ed Murray, left, and spouse Michael Shiosaki, center, pose for a picture together before the 41st annual Pride Parade Sunday in Seattle. The Associated Press/ Jordan Stead

A dancer performs during the 41st annual Pride Parade Sunday. The Associated Press/ Jordan Stead

Brian Lavalle, also known as Sister Bebe Jeebus, a member of the Sisters of Perpetual Indulgence, looks across at his newly-applied eyelash as he prepares for the 41st annual Pride Parade Sunday in Seattle. The Associated Press

Scotty Brown, 32, left, of Chicago, kisses Roger Knight, 31, of Chicago, as they get married during the Chicago Pride Parade on Broadway Street on Sunday in Chicago. The Associated Press