How in the world does one man stab 17 people? This would never happen in the southern US and it certainly would never happen in Texas. If some lunatic plowed a 2 ton rented truck into pedestrians and then jumped out and started stabbing people, at least one person would pull out a gun and shot the idiot on the spot. Even if no one had a gun, I’m guessing at least 4 burly, mean Texas dudes would walk up to him and break his scrawny little neck, machete or no machete.
I feel terrible for the people who died and their families but this is the final result of disarming the citizenry. If the good guys can’t protect themselves, the bad guys have all the advantages.