From John Leventhal, Kimberly Martin, and Julie Gaither in the new issue of Pediatrics, an estimate of the rate of serious child abuse in the US requiring hospitalization.
Abuse is a terrible problem at any age, but clearly the worst problem is in infancy (There is also a graph for deaths that looks similar.) Over and above the broken bones, ruptured organs, and the burned skin, serious abuse has a pervasive traummatic effect on neurobiology and psychology of the developing child. And this estimate is the tip of the iceberg of the problem. These are the infants whose injuries led them to be brought to a hospital, and were identified as resulting from abuse. There are many, many others.
I put this forward as a simple plea for support for services in your community for troubled families, and for effective supervision of abusive families. Do what you can.