Not that I know anything of the 1968 Tet Offensive, this honestly seems like an alright question.
everyone should know the economical, political and social outcomes of every historical event they study. They ask it all the time.
No but this question directly assessed the syllabus dot point on anti-war movements.
I split my essay up into:
1. Nature of Tet Offensive and strategic failures
2. Political impacts of Tet (LBJ did not run for POTUS again, 1968 DNC violence, RFK/McCarthy anti-war candidacy)
3. Media (Walter Cronkite, CBS, Morley Safer, My Lai 1969)
4. Antithesis point: Anti-war sentiments existed prior to the Tet Offensive, with SDS launching a student-led movement post-1964 Gulf of Tonkin escalation.