Andrew Cuomo Gunfire at an Indiana middle school Friday served as yet more proof: This kind of horror won’t end on its own. So it’s good to see Gov. Andrew Cuomo vowing to take new steps to address the madness. Officials say a student at the school wounded two before being stopped. This, a week after the killing of eight kids and two teachers at a Texas school . And bare months after the Parkland, Fla., massacre left 17 dead. There’s no magic pill to end all mass shootings. But there are sensible measures that can help reduce the violence. Cuomo, in accepting the nomination for governor at this week’s state Democratic Convention, promised to push two: One would raise the age to buy long guns in New York to 21. The other would let authorities take firearms from folks deemed a threat by a judge — which could prevent not just mass shootings, but the No. 1 category of gun deaths: suicides. Cuomo and the Legislature still have time to take these no-brainer steps this year.