Prime Minister Boris Johnson and other MPs have been seen wearing purple badges during Prime Minister's Questions.
And it's because today (Thursday 27 January) is the annual Holocaust Memorial Day; the purple and pink flame badges are worn on the lapel to mark the day, which was first held in January 2001.
These badges are part of the Holocaust Memorial Day Trust, who will bring testimonials from survivors and memorial prayers in their livestream on their website this evening.
