Really? I can.
"Earlier this year (2000-rp), a six-year-old boy pulled out a gun at school and killed one of his classmates at a school in Mount Morris Township, Michigan. Her name was Kayla Rolland."
"No, little Dedrick Owens's family could be called a lot of things, but normal wasn't one of them. The family's collective police record reads like something out of an Iceberg Slim or Donald Goines novel. His 28-year-old father is in jail - again - and his mother has demons that prevent her from coping with the pressures of keeping a job, paying rent and raising her three children. She left her two boys with an uncle. That's when a sad story turned sordid. The uncle was a drug dealer whose home was a crack house."
"A drug dealer, to survive in the "profession," must be totally ruthless. He must be willing and able to kill at a second's notice. There are no trigger locks in a crack house. You won't find tenderness, mercy or morals, either. Frankly, the safety and well being of his nephews was probably the last thing on the uncle's mind."
"Time for Some Child Control" by Kimberley Jane Wilson
So you're suggesting that maybe we should wait until "harm actually came to anyone"? I'd rather not.
So here actuall harm was done. You have made a great case for why we should have a war on guns.