WATCH: Donald Trump goes after Hillary Clinton on Benghazi with brutal new Instagram video

https://twitter.com/bennyjohnson/status/730089188943638528

One way to unite the GOP is with attack ads that work … like this, which ends with video of Hillary Clinton laughing while the diplomatic compound in Benghazi burns:

View this post on Instagram

A post shared by President Donald J. Trump (@realdonaldtrump)

This might leave a mark.

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