Until the 1940s, suspects were paraded before reporters across a stage in the basement of police headquarters.
News service reports said 15 men had been arrested and paraded before reporters on Sunday afternoon, while several others remained at large.
The president and the first lady could be seen briefly through the big windows before reporters traveling with them were told it was time to go.
Appearing together before reporters for only a few moments, they were asked if the meeting signaled the start of "a warm relationship."
Appearing before reporters today outside their home in northwest Washington, the couple vowed to fight the new charges.
"There are consequences," he allowed, without getting specific before reporters.
Appearing before reporters after the meeting, he announced, "Boys, we've just hung up a new record.
Mr. Jackson, looking solemn, appeared before reporters after the court hearing but said nothing.
For his part, the mayor in a brief appearance before reporters this week said of the neighborhood planning process, "That's just about completed."
He appeared before reporters today to read off the charges but refused to answer questions.