Impact: Fuelled the anti-war movement and the change in public opinion as the events were seen on TV and in newspapers
Reason 1: Even after all the money spent on the war the Vietcong had easily attacked the US embassy in Saigon. The Vietcong did not look weak and this made people question the impact of the war
Reason 2: Many ancient monuments and cities were destroyed; huge numbers of civilians were killed; US soldiers were killed or injured. US citizens did not want to be associated with this destruction