Alexandra Petri: [T]he state of Florida, understandably, said: Enough. This needs to stop. We have decided that there are too many children, and we can let some of them go. Or, as the state's surgeon general put it when he eliminated all vaccine mandates yesterday: "Who am I as a government or anyone else, who am I as a man standing here now, to tell you what you should put in your body? Who am I to tell you what your child should put in [their] body? I don't have that right." ... Florida is the first state to take the courageous step toward decluttering itself of excess children, but under the inexpert guidance of Robert F. Kennedy Jr., other states may follow. If we lose herd immunity, we will bring back diseases that had formerly been eliminated, and some children who would otherwise have been protected will perish. But no price is too high to pay in this pointless war against decades of lifesaving science.