It seems dire predictions of political violence are now commonly issued both by the country’s extreme fringes as well as from the mainstream, write Bruce Hoffman and Jacob Ware.

A Civil War reenactor walks past a Virginia State Police trooper in his cruiser at the entrance to the Cedar Creek Battlefield in Middletown after a pipe bomb was found there in October 2017.

Steven Brann was out Wednesday on the Gettysburg battlefield in Pennsylvania, sweeping the ground with a metal detector ahead of crews that are rehabilitating a famous part of the Civil War park.