Cambridge, Mass.

No more than five or six minutes elapsed from the time the police were alerted to the possibility of a break-in at a home in a quiet residential neighborhood and the awful clamping of handcuffs on the wrists of the distinguished Harvard professor Henry Louis Gates Jr.

If Professor Gates ranted and raved at the cop who entered his home uninvited with a badge, a gun and an attitude, he didn’t rant and rave for long. The 911 call came in at about 12:45 on the afternoon of July 16 and, as The Times has reported, Mr. Gates was arrested, cuffed and about to be led off to jail by 12:51.

The charge: angry while black.

The president of the United States has suggested that we use this flare-up as a “teachable moment,” but so far exactly the wrong lessons are being drawn from it  especially for black people. The message that has gone out to the public is that powerful African-American leaders like Mr. Gates and President Obama will be very publicly slapped down for speaking up and speaking out about police misbehavior, and that the proper response if you think you are being unfairly targeted by the police because of your race is to chill.

I have nothing but contempt for that message.

Mr. Gates is a friend, and I was selected some months ago to receive an award from an institute that he runs at Harvard. I made no attempt to speak to him while researching this column.