Jennifer Rubin: Democrats must respond to Trump’s not-so-subtle digs

When tea party activists challenged Democratic lawmakers at town hall meetings in 2009 and 2010, Republicans never characterized rowdy activists as a "mob." It was the finest example of active citizenship, they assured us. When Republicans held years of hearings on the deaths of four Americans in Benghazi, Libya, they told us it was rigorous oversight, not mindless opposition. Actually, when it comes to violence, Donald Trump infamously goaded his campaign crowds ("I'd like to punch him in the f