From the “she’s an irresponsible mother” camp came: “Shame on you for being so careless about his safety,” in Comments on the buffing ton post. And there was this from a mother of four: “How would you have felt if he didn’t come home?” But Skenazy got a lot of support, too, with women and men writing in with stories about how they were allowed to take trips all by them selves at seven or eight. She also got heaps of praise for bucking the “helicopter parent” trend: “Good for this Mom,” one commenter wrote on the buffing ton post. “This is a much-needed reality check.”

　　Last week, encouraged by all the attention, Skenazy started her own blog—Free Range, kids—promoting the idea that modern children need some of the same independence that her generation had. In the good old days nine-year-old baby boomers rode their bikes to school, walked to the store, took buses—and even subways—all by themselves. Her blog, she says, is dedicated to sensible parenting. “At Free Range Kids, we believe in safe kids. We believe in car seats and safety belts. We do NOT believe that every time school-age children go outside, they need a security guard.”

　　So why are some parents so nervous about letting their children out of their sight? Are cities and towns less safe and kids more vulnerable to crimes like child kidnap and sexual abuse than they were in previous generations?

　　Not exactly. New York City, for instance, is safer than it’s ever been; it’s ranked 36th in crime among all American cities. Nationwide, stringer kidnaps are extremely rare; there’s a one-in-a-million chance a child will be taken by a stranger, according to the Justice Department. And 90 percent of sexual abuse cases are committed by someone the child knows. Mortality rates from all causes, including disease and accidents, for American children are lower now than they were 25 years’ ago. According to Child Trends, a nonprofit research group, between 1980 and 2003 death rates dropped by 44 percent for children aged 5 to 14 and 32 percent for teens aged 15 to 19.