When teenager Amika George heard that girls were missing school because they couldn't afford sanitary products, she decided she had to do something about it. That something was starting a campaign called #FreePeriods.
Later today the 18 year old student will be joined by hundreds of protestors in Westminster to call for an end to period poverty, and urge the Prime Minister Theresa May to offer free sanitary products to young girls who are on free school meals.
Speaking to Vogue magazine recently Amika said she was horrified to hear about some girls' struggles and that it was time to not just talk about period poverty but about menstruation in general.
Today's peaceful protest is due to take place in Parliament Square from 5pm with speakers including Adwoa Aboah, Jess Phillips MP and Daisy Lowe. Campaigners are being urged to wear red.