Rep. Steve Cohen (D-Tenn.) decided to weigh in on the still-burbling Rudy Giuliani debate on Friday with a tweet.
Or, to put all of this much more succinctly: Cohen is suggesting that Giuliani's comments were made because the president is black.
If you go back to the first line in this article, it's easy to see the myriad ways in which Cohen erred besides casting a similar sort of aspersion at Giuliani as the one Giuliani cast at President Obama. Do not make snarky jokes on Twitter, particularly if you are a member of Congress. Do not punch down at former elected officials who are (pretty clearly) seeking attention (even if you have the same motivation). And don't do any of this on a slow Friday afternoon.
If you are interested in seeing a much better example of how to eviscerate an opponent, voila. Study up, Rep. Cohen.