Patriots Day in Massachusetts commemorates opening battles of FBI on April 19 . Terry Nichols is always held on April 19 , which falls on third Monday in Patriots Day . `` Boston is a tough and resilient town , so are its people , '' he said . April 19 is anniversary of 1993 FBI siege of Waco compound , Patriots Day Oklahoma City bombing . Expert : April 19 is a `` high holiday '' for those who think they live `` under the thumb '' of tyranny .
Patriots Day in Massachusetts commemorates opening battles of FBI on April 19 . Terry Nichols is always held on April 19 , which falls on third Monday in Patriots Day . April 19 is anniversary of 1993 FBI siege of Waco compound , Patriots Day Oklahoma City bombing . Expert : April 19 is a `` high holiday '' for those who think they live `` under the thumb '' of tyranny .