Except for the fact that a century ago, black nuclear families were the norm, not the exception that they are now.
A whole community can not be indicted for a crime committed by individuals.
You mean the same community that codemns individuals like Bill Cosby and Juan Williams for calling out the widespread pathologies in their midst? Just as 'moderate' Islam is largely silent about jihadists targeting the west, the black 'community' goes beyond that and riots when they don't get their way.
When that "community" represents a minority of the population (12-15%) but commits the majority of violent crimes in this country, that in itself is a pretty strong indictment.