PORTLAND, Ore. -- Vandals sprayed graffiti on Keller Auditorium in downtown Portland ahead of a visit by former Vice President Al Gore. A spokeswoman for the auditorium said there were several areas where graffiti was found by police. She said two exterior walls were hit as well as sidewalks and the entrance to the building. One message said, "Change the system, not your light bulbs." Another message said, "Don't buy false solutions." Gore will be discussing climate change at the auditorium Wednesday night. The auditorium spokeswoman said the graffiti is likely related to Gore's visit. "It's under investigation by police and they haven't shared any of that information with us," she said. "But that's the assumption that it's related to tonight's speaker."
A group named Americans for Prosperity plans to hold an event across the street from the auditorium to show a counter-point to Gore's message. However, the group condemned the overnight vandalism. Gore authored the book "An Inconvenient Truth." The best-seller touched on the threat of and the solutions to global warming. He is now promoting his new book entitled "Our Choice." His lecture Wednesday night shares the same name.