Police hand out snacks at "Hempfest"

A man wearing marijuana-themed sunglasses chats on a phone at the first day of Hempfest in Seattle, Wash., Aug. 16, 2013.

Thousands packed the Seattle waterfront park for the opening of a three-day marijuana festival -- an event that is part party, part protest and part victory celebration after the legalization of pot in Washington and Colorado last fall.

This year's Hempfest was expected to draw as many as 85,000 people per day.

Seattle Police Sgt. Sean Whitcomb hands out bags of Doritos affixed with a sticker that helps spell out rules for marijuana users during the second day of Seattle's annual Hempfest, Aug. 17, 2013.

This is the first year for the annual pro-pot rally since Washington State voters legalized the recreational use of marijuana.

A Doritos bag with a sticker affixed that helps spell out rules for marijuana users during the second day of Seattle's annual Hempfest, Aug. 17, 2013.

A group of teenage boys look over a display of glass pipes at the first day of Hempfest, Aug. 16, 2013.

Cody Park exhales a cloud of marijuana smoke after taking a hit on a bong at the first day of Hempfest, Aug. 16, 2013.

A man pulls out a bag of marijuana to fill a pipe at the first day of Hempfest, Aug. 16, 2013.

People walk past the main stage at the first day of Hempfest, Aug. 16, 2013.

Vendors look over their display of glass bongs at the first day of Hempfest, Aug. 16, 2013.

A tee shirt is displayed at the first day of Hempfest, Aug. 16, 2013.

Billy Dee, of Newport, Wash., turns his head as he exhales a cloud of marijuana smoke at the first day of Hempfest, Aug. 16, 2013.

Seattle Police Sgt. Sean Whitcomb is thanked by Vivian McPeak, Hempfest's executive director, after police passed out bags of Doritos affixed with a sticker that helps spell out rules for marijuana users during the second day of Seattle's annual Hempfest, Aug. 17, 2013.

A customer holds up a tee shirt for sale at the first day of Hempfest, Aug. 16, 2013.

A man wears an American flag as he walks past a vendor selling tie-dyed products at the first day of Hempfest, Aug. 16, 2013.

An American flag flies atop the stage at the first day of Hempfest, Aug. 16, 2013.

Tommy Gibbons, 14, sports marijuana-themed sunglasses at the first day of Hempfest, Aug. 16, 2013.

Spokesman Johan Spangenthal-Lee and Seattle Police Sgt. Sean Whitcomb, right, hand out bags of chips at Hempfest, Aug. 17, 2013.