On September 11, 1851, at Christiana, Lancaster County, Pennsylvania, the African-American community rose up in arms against attempted enforcement of the Fugitive Slave Law of 1850. While attempting to save four men from the federal posse charged to re-enslave them, rioters killed the Maryland farmer who was trying to reclaim his "property."
Treason at Christiana, September 11, 1951 The true story of a Battle of Freedom on the Underground Railroad that Rocked the Nation, Threatened Secesion of States from the Union and Brought a Charge of Treason by the Federal Government Against 38 Americans
Historic structures Survey and Determination of Eligibility Report : East Lampeter, Leacock, Strasburg, Paradise, Salisbury, and Sadsbury Townships, Lancaster County, Pensylvania