The whole 'grandparents raising grandchildren' thing
First of all, it's nothing new, although in past generations, it was more likely to be because the parents had died.
But don't you wonder where the grandparents went wrong in the first place, that the kids turned out the way they did (drug addictions, jail, unable to care for their children, etc.)? I said that one time to a group of retirement-age women, none of whom were doing this BTW, and that did not go over well.
Another thing I've noticed is that it seems to be almost entirely a black thing. If the grandparents are white, the grandkids are going to have some black genetics in there somewhere. Maybe that's the way it is around here, IDK.