This was a very interesting week in terms of determining which outrageous comments warrant resignation and which do not. Let's review, shall we? Samantha Power calling Hillary Clinton a "monster" leads to a quick resignation. Howard Wolfson comparing the Obama campaign to Ken Starr does not. Then there is Republican congressman Steve King, who claimed that "the optics" of a Barack Obama presidency would encourage "the radical Islamists" - and that al-Qaeda "would be dancing in the streets" if Obama wins. Now, imbecility has never been a disqualifier for public office. But rank racism should be. If John McCain and the GOP hierarchy don't ask King to step down, the optics will be very, very clear indeed.