At the Races: Have we heard this song before?

.Sixteen years ago, the song of the summer was “I Gotta Feeling” by the Black Eyed Peas, while the news story of the summer was the burgeoning tea party movement and the protests it sparked at congressional town hall meetings across the nation.

Some gatherings grew so heated that punches were thrown, arrests were made and members of Congress were hanged in effigy.

This summer represents a distant echo of those days. Just as they did in August 2009, town hall meetings are giving the president’s detractors an outlet to register their disapproval of his agenda. Then, it was Republicans angry over Barack Obama’s health care overhaul; today, it’s Democrats outraged by Donald Trump’s recently enacted domestic policy bill .

Then, like now, the other side accused well-funded outside groups o