"Rethink the role that slavery plays in historical tourism"

Two professors agree, "While slavery has been a vital topic for scholars for decades, it remains the third rail of the historical tourism industry. "

They then urge, " As the commemorations get underway, slavery must not be pushed to the 'margins of our public explorations of the Civil War. In short, it should not be just 'okay' to talk about slavery—it should be essential."

Do they think that if enough venues touch the third rail, the electricity goes away?