52 Weeks of Firsts: 17th-century Quakers in Philadelphia penned the first recorded petition against slavery in America

In honor of the nation's 250th anniversary, the city is celebrating with 52 Weeks of Firsts, highlighting a historic milestone each week. KYW Newsradio's John McDevitt shares more about the first public protest against slavery in America, which happened in Philadelphia in 1688. (Photo credit: Colibri Workshop)