A new ad from the center-left Third Way group pokes fun at Donald Trump’s legal travails and tries to prod him into taking the stand at his hush money trial. The group is spending five figures on digital ads that will air in New York City, south Florida and Dallas, where the former president will speak at a National Rifle Association meeting this weekend. It highlights Trump’s past comments on the Fifth Amendment, reported the New York Times. “Take the stand, Donald, or admit you’re a coward,” says the new ad, pointing toTrump’s past comment that “if you’re innocent, why are you taking the Fif…