Revellers take part in a Gay Pride parade in San Jose June 28, 2015. [Photo/Agencies]

In San Francisco, police say a bystander was shot at a gay pride event at the city's civic center Saturday when several men got into an argument unrelated to the celebration. A 64-year-old man was shot in the arm, and he is expected to survive, Officer Carlos Manfredi said on Sunday.

Dykes on Bikes traditionally kicks off the city's Pride parade. Riders revved their engines for five minutes and received a sprinkling of silver glitter from a bystander before setting off at 10:30 a.m. to hoots and cheers and unbridled applause.

Corporate sponsors included home-sharing platform Airbnb, which had a float with dancers shimmying on a bed and in a bathtub. Apple sent a large contingent of people clad in white T-shirts.

Kelsey Brosler, a 17-year-old high school student from Concord, California, and mother, Carlene Brosler, 45, were among the spectators. The younger Brosler, who recently came out as pansexual, said the Supreme Court decision was a long time coming.

"Definitely the fight is not over yet. I know everyone here is still fighting," Kelsey said. "Even though it's a very happy event, there's still more to come."