The National Trust for Historic Preservation is on the case. They sent out a mass email a few minutes ago. A colleague got this one at her office in Chicago:

TAKE ACTION NOW: DETROIT ICON SCHEDULED FOR DEMOLITION
Stop the Demolition of Tiger Stadium

For nearly 20 years, Tiger Stadium has been the focus of a local and nationwide effort to preserve an icon of baseball. As one of the last remaining historic ballparks, the National Trust for Historic Preservation included the stadium on the list of 11 Most Endangered Places in America in 1991. Although partial demolition of the stadium took place last year, the remaining portion of the ballpark was slated for redevelopment that would preserve historic elements as retail, office and community space, and preserve the playing field itself and the lower deck seating as a venue for youth baseball.
This vision was lost on Tuesday, June 2nd when the economic development arm of the city voted to follow through with complete demolition of Tiger Stadium.
Demolition equipment was on site the following day, despite protests from preservationists, baseball enthusiasts and local activists.
Demolition may take place as early as June 8th.

WHAT YOU CAN DO:
WRITE THE CITY COUNCIL TODAY! [[link)
Express your outrage with demolition of Tiger Stadium. Let them know that redevelopment of this iconic historic place could transform it back into a thriving center of community activity.
Then, call Mayor Dave Bing's office at 313-224-3400 and voice your support for Tiger Stadium. He needs to know what protection of the stadium means to the City of Detroit and people across the nation.
Learn more about Tiger Stadium on PreservationNation.

National Trust for Historic Preservation
1785 Massachusetts Avenue, NW
Washington, DC 20036
202-588-6000 / 800-315-6847
members@nthp.org / http://www.preservationnation.org/