World leaders, royalty, and dignitaries gather at Auschwitz-Birkenau to mark the 80th anniversary of its liberation, with survivors and their message taking center stage. Survivors will place a light in front of a freight train carriage, symbolizing the event. Historic landmarks across the UK will light up in purple to mark Holocaust Memorial Day. UK political leaders emphasize the importance of unity against antisemitism and the need to learn from the Holocaust to prevent such atrocities from happening again.