Another violent episode--this policy's namesake riot--occurred in Trafalgar Square in 1990; that also did not end well for the minister associated with this policy since it led directly to Margaret Thatcher's downfall.
Four years before the destruction of the Savoy Palace, the "Bad Parliament" enacted a regressive version of this policy at the rate of four pence. The 1379 legislation of this policy was progressive, with a ten mark levy on the Duke of Lancaster, this policy's chief proponent. But the 1381 legislation reverted to the regressive structure typical of this policy and tripled the rate. That triggered one violent episode whose climax occurred at Smithfield when Wat Tyler was cut down by one of Richard II's companions, thus preserving his rule but damaging the political circle around John of Gaunt. Another violent episode--this policy's namesake riot--occurred in Trafalgar Square in 1990; that also did not end well for the minister associated with this policy since it led directly to Margaret Thatcher's downfall. For 10 points, name this usually-constant lump-sum tax that, despite its name, has nothing to do with voting.
Four years before the destruction of the Savoy Palace, the "Bad Parliament" enacted a regressive version of this policy at the rate of four pence.
Poll Tax (accept "head tax" or "capitation tax")