Don’t negotiate with teachers who walk out over covid. Fire them.

Chicago Mayor Lori Lightfoot deserves credit for standing up to the Chicago Teachers Union. But the fact that so many Chicago teachers were willing to abandon their students in the first place is disgraceful. The next time they walk off the job in violation of the law, she shouldn’t negotiate with them — she should fire them.

It is appalling that nearly three-quarters of Chicago Teachers Union members voted to walk out, locking more than 300,000 students out of their schools. As Lightfoot made clear, their actions were not only illegal, they were...