Stew Albert, a co-founder of the theatrically unruly Youth International Party -- whose members were more commonly known as Yippies -- and one of the last remaining radical leftists of a colorful cohort that once included Jerry Rubin, Abbie Hoffman, Bobby Seale, Huey Newton, Eldridge Cleaver, John Lennon, Timothy Leary and Tom Hayden, died Monday in Portland of liver cancer. He was 66.

Mr. Albert was clubbed by police during the iconic 1968 anti-war Democratic National Convention riot, and was named as an unindicted co-conspirator at the Chicago 7 trial; seven others were indicted for conspiring to start a riot at the convention. The prosecution read articles he'd written for an underground newspaper.

The Yippies were a political and cultural group which in 1968 advanced a pig as candidate for president and in 1970 invaded Disneyland for a day. In 1970, Mr. Albert ran for sheriff of Alameda County, Calif., but lost. (He carried the city of Berkeley, though.)

A lifelong radical and activist, unlike many aging '60s radicals and hippies who grew into careerists who worried about their own kids and drugs, Mr. Albert continued to carry an idealistic torch for the 1960s, marching, protesting, speaking and writing on behalf of radical social change.

Mr. Albert moved to Portland in 1984 with his wife, Judy Gumbo, whom he married in 1977, and young daughter. He worked as a freelance writer and editor from his Northeast Portland home, helped raise his daughter and enjoyed his reputation as a hell-raiser. He was active in Northwest Coalition for Human Dignity, an anti-racism group, and was president of Oregon Jewish Agenda, which in the mid-'80s started promoting Arab (Palestinian)-Jewish dialogue.

"I came here to bring the holy spirit of the '60s to this younger generation," he said in 2000.

His memoir, "Who the Hell is Stew Albert?" -- so named because of a question Howard Stern posed on his radio show -- was published by Red Hen Press in 2005.

"It's less a case of local boy makes good, more a case of local boy makes trouble," Mr. Albert said.

Mr. Albert was born Dec. 4, 1939, in Brooklyn, N.Y., an only child. He graduated from Pace University and in 1964 began organizing against the Vietnam War.

In 1988, he attended a 20-year reunion in Chicago of 1968 protesters.

"I imagine Americans secretly miss the passion of my generation," he wrote of that experience.

In 1996, Mayor Richard M. Daley, son of former Mayor Richard J. Daley, invited him to Chicago with his pal Tom Hayden (a former roommate), for a day of reconciliation. Mr. Albert shook hands with the younger Mayor Daley.

Mr. Albert was co-author with his wife of "The Sixties Papers" anthology.

He ran the Yippie Reading Room online and continued to blog until the day before his death, at http://members.aol.com/stewa/stew.html

He is survived by his wife, Judy Gumbo Albert, and daughter, Jessica Pearl Albert.

A funeral will be at 1 p.m. Wednesday at Havurah Shalom.

Remembrances to Planned Parenthood Columbia Willamette or Rosenberg Fund for Children.