New video of the Kansas City shooting shows some of the injured children trying to escape the horrific scene -- and we've learned new info about what sort of weapon police believe the shooter used.
TMZ obtained this never-before-seen footage ... a new angle of Wednesday's shooting as the Chiefs Super Bowl celebration wrapped, and now you can see exactly where the shooting started ... and how the injured -- including a handful of kids -- reacted.
Police have said 9 minors were among the 23 victims who suffered gunshot wounds yesterday, and here you can see a few of them hobbling away -- but heroically, also helping each other -- immediately after the barrage of gunfire outside Union Station.