Editor's Note: This column was coauthored by Rob SchwarzwalderThe rioting in Baltimore is disturbing to all Americans, as the unresolved cause of Freddie GrayÂ’s death while in police custody should be, as well. It is right that political and religious leaders, community groups, business organizations, and law enforcement officials are commenting about all the causes and effects of the riots. But one thing seems missing from the discussion, a factor whose omission is unacceptable. ItÂ’s called fatherhood.The rioting is inexcusable but should not be wholly surprising. It is likely that the great majority of it was been done by young...