[Williams]

Now that I see 100 people total watched a silent video of Obama I can understand it, he often takes on an angry look.

[x]

Once you sort out the results according to who voted for Obama and who voted against him there may not be much left of this survey (assuming there was anything in it to begin with).

7 out of 100 points higher for White than Non-White participants isn't all that big a difference, and could be accounted for by political beliefs.

Obama doesn't look that angry in the White House Correspondents Dinner video, but respondents who think he is could be picking up on "micro-expressions" that reveal how he truly feels.