English: 18 x 25.5 inch screenprint poster, which says "Dare to Struggle, Dare to Win! Strike May 4th". On May 4, 1970, students across the United States protested in response to Nixon's bombing of Cambodia. The most infamous of these protests was at Kent State University where four students were shot and killed.
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.
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