This year marks the 80th anniversary of the Lidice tragedy, the Czech village razed to the ground by the Nazis in 1942 as revenge for the assassination of Nazi governor Reinhard Heydrich. 340 people were murdered, including 88 children. For the last 50 years, an international children’s art competition has taken place to commemorate the child victims, and now a special exhibition comprised of some of the best entries from over the years has opened in Paris to mark the anniversary.