From National Review:

These deaths are horrifying. The incidents are terrifying. But notice something important. We are blessed that the numbers of fatalities are far lower than they were at places such as Tree of Life synagogue in Pittsburgh, Stoneman Douglas High School in Florida, or Santa Fe High School in Texas. And a big part of that lower death toll can be summed up in one word: heroes. In fact, of the four total fatalities in the three incidents, three of the dead were people who took heroic action. Two of the dead were young men who directly charged their attackers.
What’s more, we’re now remembering the heroes’ names more than the shooters. The shooters failed in two of their core missions — to kill large numbers of victims and achieve enduring fame. And if they keep failing, I wonder . . . could the mass-shooting contagion finally start to break?