I gave the Henry Gates piece a quick re-read. Gates broke into his university-owned dwelling with the help of his driver, having no idea that a neighbor would mistake it for a break-in. When an officer came to check out the situation, Gates eventually showed his ID but one or both of them had his/their dander up-- accounts vary-- and the cop arrested Gates for disorderly conduct. Charges were dropped and Obama had them both visit the WH for a sit-down. Wiki says that the prof and the cop remained cordial in later encounters, probably because neither of them would have got face-time with a President were it not for their untimely meeting.