Detroit Free Press: Charter proponents compare public schools to slavery. "In YouTube videos, Clark Durant (who founded Cornerstone private and charter schools in Detroit and is now running for U.S. Senate) and Rev. Horace Sheffield III (who also owns a charter school in Detroit) invoke Abraham Lincoln, slavery and emancipation in an appeal to "free" schoolchildren, presumably from the chains of public education." Well let's see. The schools in Detroit graduate only 1 in 4, doom the kids to a life of failure and poverty, and they simply cannot get off the liberal plantation. They cannot leave the system! What else to call it?