Which "schoolchildren" died because of a firearm that was purchased inside of a 30 day window? None of the famous massacres would fit this bill; did you have an actual, documented event in mind or just feelings?
All of the gun grabbers I am aware of that are in favor of waiting periods try to make this infringement justified based on "crimes of passion" and other "heat-of-the-moment" nonsense - not "schoolchildren."
It's just an example, you're refusing any kind of gun regulation, doesn't matter what it is, dead kids is not a factor.
Casual gun ownership is the difference. In Europe you can get guns, but you do it for a purpose like hunting or sports, license and training is required.
In the US one of the best demographic predictor of homicide rates is skin color. For instance, super white places like New Hampshire with the ~loosest gun laws in the country have extremely low murder rates.
If you take a look at say a heat map of the US where homicide is[1], it tracks extremely closely to where the black population is (New Mexico an outlier despite having stronger gun laws than most the surrounding states besides Colorado).[2]
What's also fascinating is that this metric is consistent even when controlling for socioeconomic status - ruling out "unfair circumstances! less opportunities!" arguments.
