Gun violence in America is in the headlines — again — with the slaying of at least 58 people Sunday in Las Vegas marking the deadliest mass shooting in modern U.S. history.“It’s a deplorable event, and it happens all too often in our country,” Thomas Campbell of Baker McKenzie LLP said today.Campbell has strong views about the factors that contribute to gun violence and what the nation should do to stem it.“Personally, I would like to see some sane regulations come in,” he said …