A reader writes:

Tomasky is wrong. The NRA is not talking about Secret Service agents; they’re talking about the armed guards, which is why the ad says “armed guards”. St. Alban’s and other DC private schools would have armed guards at the gates regardless of the President’s daughters. The kids of the rich always are better protected.

Another is on the same page:

The point of the ad is that the private school the first daughters attend, Sidwell Friends School, has a substantial security department composed of “Special Police Officers” and other security personnel. The NRA’s proposal has been met with widespread scorn, as if armed security in schools is nigh atrocious. The obvious question is, if a school for the rich can have it without atrocity, why not my local public school?