Michelle in Kenya in a photograph taken by her then boyfriend Barack Obama. Credit :Barack Obama/Obama-Robinson Family Archives Back in the ancestral homeland of Michelle Obama, the architects of Jim Crow took great pains to set down the boundaries and define the roles of anyone living in the pre-modern South. Signs directed people to where they could sit, stand, get a sip of water. They reinforced the social order of an American hierarchy — how people were seen, what they were called, what they had been b...