The Sixth Floor Museum has expanded into the 501 Elm Building across N. Houston Street from the museum, with administrative offices upstairs and a really cool new café and store on the ground level. The café, with food from La Duni and excellent coffee, looks out on the site of the city's great shame, the event that labeled us "The City of Hate," which means that French tourists can sip lattes and despise us in air-conditioned comfort. This has to be good for the economy. Meanwhile, the store offers work by local artisans and Fair Trade/Eco-Friendly manufacturers, some with references to Kennedy, some of it more about the Kennedy era and Dallas. Name another city that has turned its worst disability into a profit center.