The man who just committed the deadliest mass shooting in the U.S. in the past two years had a previous weapons conviction—so how did he get his hands on another gun? Shamar Elkins, a 31-year-old father, shot and killed his seven children and their cousin Sunday in Shreveport, Louisiana. The victims’ ages ranged from three to 11, CNN reported. He also critically injured two women: his wife and the mother of the eighth child. But in March 2019, three years after he finished a seven-year stint in