A People's Calendar (aPC) is an open-source project that seeks to promote the worldwide history of working class movements and liberation struggles in the form of a searchable "On This Day" style calendar.
On this day in 1955, 15-year old Claudette Colvin was arrested in Montgomery, Alabama for refusing to give up her seat to a white woman, nine months before the more widely known incident with Rosa Parks.
Image: Claudette Colvin at 13 years old, April 20th, 1953 [blackpast.org]