On another board we are discussing the gate-crashers at the White House. There was some mention of racial profiling.
This reminded me of a half-remembered story. After either Garfield or McKinley was killed, there was an investigation. All the guards said that they were alert, but they had their eye on a black guy in the crowd rather than the crazy white guy.
Was this Garfield in the train station, McKinley in the Temple of Music or Colonel Mustard in the library?