General Discussion

...that's the comparison.

As the war progressed, public support began to erode. By 1967, net opinion had turned negative for the first time, with 45% of Americans believing sending troops was a mistake, up from 32% earlier in the year. Rising U.S. casualties, lack of clear victories, and media coverage of incidents such as the My Lai Massacre contributed to growing disillusionment. The Tet Offensive in 1968 further shocked the public, showing that North Vietnamese forces were far from defeated and undermining confidence in the administration’s handling of the war.
https://ropercenter.cornell.edu/blog/creeping-doubt-public-support-vietnam-1967