A group of demonstrators , organized by pacifist David Dellinger , stood outside the White House .
A group of demonstrators , organized by pacifist David Dellinger , conducted the first American public protest against U.S. involvement in the Vietnam War .
A group of demonstrators , organized by pacifist David Dellinger , stood outside the White House and conducted the first American public protest against U.S. involvement in the Vietnam War .