Dachau concentration camp in Germany. Image via Pixabay Authorities across South East London have paid tributes to mark Holocaust Memorial Day today (Wednesday, January 27). Emergency service workers and councils across the region acknowledged the occasion in various ways as the South East of London remembered the millions of people who were imprisoned and killed under the fascist Nazi regime in Europe during the 1930s and 40s, and all those impacted by genocide. Holocaust Memorial Day 2021 s theme is Be a Light in the Darkness , with people observing the day encouraged to light a candle and safely display it in their window.