What's your bag,

December 1966
U.S. military strength in South Vietnam reaches 385,000.

October 1966
Influenced by the assassination of Malcolm X and the Watts Riots, African American radicals form an armed militant group, the Black Panther Party, in Oakland, California.

January 1967
20,000 hippies gather in San Francisco's Golden Gate Park for a Human Be-In.

December 1967
The number of U.S. military personnel in South Vietnam has risen to nearly 490,000.

Photo: Corbis

- lyrics from 'For What It's Worth,' Buffalo Springfield, 1967.
Guerrilla: The Taking of Patty Hearst American Experience PBS