Counting the Uvalde massacre, mass shootings have claimed the lives of 108 people in Texas since 2009.

We don't yet know what mental illness, consuming rage or hate-fueled ideology drove an 18-year-old gunman to enter a Uvalde elementary school on Tuesday and spill the blood of innocents. But we do know this: politicians are already scrambling to assure us the shooter's ability to purchase firearms and body armor bore no responsibility. Mere hours after the carnage, U.S. Sen. Ted Cruz, R-Texas — recipient of a 100% rating from the National Rifle Association (NRA) — sounded a warning against "politicizing" it...