[8] In September 1966, Sharon Krebs was arrested for obstructing the sidewalk on Second Avenue in New York City, where she had set up a table without a peddler's licence in order to sell literature and pins expressing support for the Viet Cong.

[2] In July 1968, Krebs and 35 others were arrested and charged for incitement to rioting at an Anti-Vietnam War rally, which targeted a fundraising dinner for Vice President Hubert Humphrey.

[10] In November 1968, Krebs and her partner Robin Palmer disrupted a Humphrey-Muskie campaign rally by stripping nude and holding up a severed pig's head; a signature move of the radical group known as "the Crazies", whose members were often associated with the Youth International Party or "Yippies".

[11] Around the same time, she helped to establish the feminist guerrilla theater group known as the Women's International Terrorist Conspiracy from Hell (W.I.T.C.H) with Nancy Kurshan, Robin Morgan and Roz Payne.

[12][13] On December 4, 1970, Sharon Krebs was arrested along with five others (Robin Palmer, Joyce Plecha, Claudia Conine, Martin Lewis and Christopher Trenkle) while attempting to carry out the first in a series of planned arson attacks on buildings in New York City.

[15][16] Krebs's apartment at 90 Bedford Street in Greenwich Village was raided by police, who recovered multiple items including Viet Cong flags;[2] this building would later become famous for its use in establishing shots in the sitcom Friends.