Answer:
The main difference is the extent of the opposition to the Vietnam war during the United States' military intervention.
Step-by-step explanation:
While the first interpretation maintains that public opinion had turned against the war even before the Tet Offensive of 1968, the second one claims that the war had strong public support at that time and even up to 1970. While the first interpretation focuses on the many demonstrations against the war, the second one recounts an attack against peaceful protesters as being celebrated by the public.