"At the time as we know it, the largest gathering of musicians for one photo," said Jonathan Rheingold, the curator of "Hip Hop's Greatest Day," a photo exhibition inside the rotunda at City Hall.

“The first one’s going to be at City Hall building, and the next one will be in ROC Park, where we can host a few more people,” he said. “We’re doing between 2,000 and 3,000 traditional ...

People with guns are directed to the police station, which is part of a sprawling municipal complex ... gun owners. The city has a gun locker at City Hall and another at the Tucson Convention ...