George Zimmerman, the man who shot and killed Trayvon Martin, is back in the news, this time for filing a $100 million dollar lawsuit against Trayvon Martin’s family.A shooting in the naval shipyard in Pearl Harbor, Hawaii, left three dead, including the shooter, an active duty sailor on a submarine docked at the base.In Connecticut, two teenage siblings were shot and killed by their mother’s boyfriend, after an argument about indoor smoking.Finally, in Tennessee, a year-long neighbors’ feud about mowing the lawn ends in a fatal shooting.