The language about slavery and marriage in the far-right pledge signed by Michele Bachmann wasn't just wildly offensive, it was also just plain wrong, as historian Tera W. Hunter explains in a Times op-ed today. Ignoring how slavery actually tore apart families is, she writes, "part of a broad and deliberate amnesia" that is not only rooted in pro-slavery tradition, but actively trying to deny a legacy of injustice in the present.