always a substantial number of americans who supported the vietnam war. >> you bunch of bums. >> where is your son? my son is a marine! >> it's hard to recapture how intense that period was, how morally conflictual it was and your relationship with your country, which was something we never questioned. >> the pressure on mr. johnson to choose sides has been growing. clinging to a middle line, he tried to give one ear to the war of hawks in america, one ear to the dove, but both ears to neither. >> we halted bombing in the north in hope that the government in hanoi would signal its willingness to talk instead of fight. but i regret to tell you that no signal came during those 37 days. >> johnson feels alternately