After the Colorado movie massacre, it seemed an impolite and irrelevant question: What were small kids and infants doing at a midnight movie, much less a PG-13 movie with violent scenes and dark themes? But I have to admit, as the parent of a 6-year-old, it’s the first question that came to mind when I heard that children were caught in the horror. And judging by the response to a blog I wrote this week, a lot of people have been wondering the same thing. Please don’t misconstrue. I don’t mean to affix blame on anyone besides the alleged shooter, James Holmes. This isn’t to suggest that the parents were at fault, or should feel guilt or shame. It was gut-wrenching to hear that a 6-year-old girl was killed in the rampage, and that a 4-month-old infant was slightly injured in the chaos. But beyond this tragedy, I think there’s a broader parenting question in play: How late is too late for little kids, whether it’s a movie, arcade or restaurant? (Michael Mayo Sun Sentinel Columnist)