Illustration by Matt Wuerker Screaming constituents, protesters dragged out by the cops, congressmen fearful for their safety — welcome to the new town-hall-style meeting, the once-staid forum that is rapidly turning into a house of horrors for members of Congress. On the eve of the August recess, members are reporting meetings that have gone terribly awry, marked by angry, sign-carrying mobs and disruptive behavior. In at least one case, a congressman has stopped holding town hall events because the situation has spiraled so far out of control. “I had felt they would be pointless,” Rep. Tim Bishop (D-N.Y.) told...