| SDS | '60s org. that protested the Vietnam War |
| FREETIBET | Human-rights org. that protested the 2008 and 2022 Olympics |
| AIM | Org. that protested Denver's Columbus Day parade |
| FREEDOMRIDERS | Group including 35-Across that protested the segregation of public buses |
| BCSA | '60s org. |
| AGENTORANGE | Toxic herbicide that was sprayed from the air by the US military during the Vietnam War (5,6) |
| TET | In 1968, which Vietnamese Lunar New Year holiday was being celebrated at the time of the major surprise offensive by the communistvforces in the Vietnam War? (3) |
| COBRA | The fast-striking Indian snake gave its name to this attack helicopter developed in the 60s and deployed in the Vietnam War |
| VIETCONG | Name by which the National Liberation Front for South Vietnam was known during the Vietnam War (8) |
| ANARCHIST | Book written by William Powell to protest the US involvement in the Vietnam War, The ... Cookbook |
| REDGUM | The group that recorded the Vietnam War song, 'I was only Nineteen'; native tree (6) |
| CONG | see 4dn, Political organisation and army that fought the US and South Vietnamese governments during the Vietnam War |
| VIET | and 20dn, Political organisation and army that fought the US and South Vietnamese governments during the Vietnam War |
| THEY | "The Things ___ Carried" (1990 story collection about the Vietnam War) |
| LONGTAN | What was the most famous battle in the Vietnam War involving Australian troops? (4,3) |
| SAIGON | Miss ___, musical set during the Vietnam War and based on the opera Madame Butterfly (6) |
| LIN | United States sculptor and architect whose public works include the memorial to veterans of the Vietnam War in Washington (born in 1959). |
| ORANGE | Highly poisonous herbicide used as a spray for defoliation and crop destruction by the US during the Vietnam War (5.6) |
| AGENT | Highly poisonous herbicide used as a spray for defoliation and crop destruction by the US during the Vietnam War (5.6) |
| IROQUOIS | What helicopter was the mainstay of US Army assault units in the Vietnam War? (8) |
