So that it could attack them?
Unless the dog chews up a child, a simple bite is not enough reason to put it down. That’s where you try to train it.
I’m not saying Noem had to be the one to train it, but somebody might have.
She was embarrassed by a puppy, shot a puppy and then tried to justify it with some b.s. excuse about how it “tried” to bite her when she reached for it while eating (very common dog behavior). This wasn’t exactly a pitbull charging a toddler.
Nobody in rural America will take a dog if it killed livestock.