What does the 14th Amendment, ratified in 1868, have to do with the teacher walkouts that are sweeping across the land today? Everything, explains law professor Derek Black in the latest episode of Have You Heard. Short version of the history: all 50 states have language enshrining their responsibilities to provide public education to their citizens. The deep spending cuts, and the expansion of charter schools and private school vouchers, represent an effort to hack away at the states’ obligations. If you’re wondering why so many protesters in Arizona, Colorado and [insert name of next state here] have been citing their state constitutions, well, here’s your answer!