Five decades after anti-war activists and Chicago police clashed in a dramatic sequence of protests that took place in the city during the August 1968 Democratic National Convention, another generation of pacifists are planning a demonstration against “war and police violence.”

“We are not aiming for a nostalgia event,” said Andy Thayer of the Chicago Committee Against War and Racism, which is organizing the coming protest, slated for Aug. 25.

“Then, people were protesting the longest-ever war,” at the time the Vietnam War, Thayer said. But now, in Afghanistan, “We’re currently involved in America’s longest-ever war.”

The Aug. 25 event will start at noon . The group has obtained a permit, according to Thayer and city records, and will gather at Daley Plaza. A number of speakers — including Vince Emanuele, Marine Corps veteran and anti-war speaker, and Kathy Kelly of the organization Voices for Creative Non-Violence — are scheduled to address attendees.

After the rally, the group plans to march through the Loop to the Gen. John Logan statue in Grant Park, a focal point of the 1968 protests, according to the group’s website.

“Chicago ’68 was pivotal,” Thayer said. “The lessons are important to relearn today.”