Wow. Our experiment is off to a great start—let's see if we can finish it off sooner than expected.
A day after Donald Trump posted an ad on his Instagram account featuring Hillary Clinton barking like a dog, a super-PAC backing Clinton for president has responded in kind.
The ad, from Priorities USA, formed in 2011 and now supporting Clinton, repeats the motifs from the Trump video—Vladimir Putin doing martial arts, an ISIS fighter with a gun—but replaces the barking Clinton footage with a garbled response from Trump to a question about whom Trump consults for policy ideas. Instead of a clip of Trump laughing, there's a clip of Clinton laughing. The closing text is the same: "We don't need to be a punchline!"