Two or three paragraphs into this riveting Wonkblog essay in The Washington Post I began having flashbacks, and not the good kind. 

The key thought: Where is the late, great Democrat Sen. Daniel Patrick Moynihan when we really need him?

The headline opens the door and it's a very important door, if you care about social justice and the urban poor: "What your 1st-grade life says about the rest of it." Here is the opening of the report, which has a Baltimore dateline for perfectly logical reasons:

BALTIMORE -- In the beginning, when they knew just where to find everyone, they pulled the children out of their classrooms.

They sat in any quiet corner of the schools they could claim: the sociologists from Johns Hopkins and, one at a time, the excitable first-graders. Monica Jaundoo, whose parents never made it past the eighth grade. Danté Washington, a boy with a temper and a dad who drank too much. Ed Klein, who came from a poor white part of town where his mother sold cocaine.

They talked with the sociologists about teachers and report cards, about growing up to become rock stars or police officers. ... Later, as the children grew and dispersed, some falling out of the school system and others leaving the city behind, the conversations took place in McDonald’s, in public libraries, in living rooms or lock-ups. The children -- 790 of them, representative of the Baltimore public school system’s first-grade class in 1982 -- grew harder to track as the patterns among them became clearer.

What shaped these young and, quickly, troubled lives?