View of anti-Vietnam war protestors around the Lincoln Memorial reflecting pool on 21 October 1967

In Washington, D.C. nearly 100,000 people gather to protest the American war
effort in Vietnam. More than 50,000 of the protesters marched to the Pentagon
to ask for an end to the conflict. The protest was the most dramatic sign of
waning U.S. support for President Lyndon Johnson’s war in Vietnam. Polls
taken in the summer of 1967 revealed that, for the first time, American
support for the war had fallen below 50 percent.

Outside the Pentagon during the 1967 demonstrations.

A scuffle between the military police and protesters outside the
Pentagon (above & below).