People lay roses on the grave of former Swedish Prime Minister Olof Palme, on February 28, 2016 just a few blocks away from the place where he was shot and killed 30 years ago in the center of Stockholm. Palme was shot on his way home from a movie theatre and the case remains unsolved. With no end to the probe in sight, the murder remains an open wound in the Scandinavian country. / AFP / JONATHAN NACKSTRAND (Photo credit should read JONATHAN NACKSTRAND/AFP/Getty Images)