"Showing the photo in that context, that segment, was poor judgment. so without reservation or qualification, I apologize to the Romney family. Adults who enter into public life, implicitly consent to having less privacy, but their families, especially their children, should not be treated callously or thoughtlessly. My intention was not malicious, but I broke the ground rule that families are off-limits. For that I am sorry."
Update: MSNBC deleted the tweet and apologized just before 11 p.m. EST.