HMM. SPEAKING OF CBS, this AP story says that three people protested outside an NRA rally in Tucson featuring Charlton Heston. But the version on the CBS website, which is otherwise the same, raises that number to "a few dozen."
UPDATE: A reader writes to remind me that CBS has trouble with numbers, since a while back it seemed to think that Bush was President back in 1998. Heh. I had forgotten that one.