In the fall of 1967, about 75,000 antiwar protesters converged on the Pentagon, performed a ritual exorcism, and attempted to levitate the building.
The levitation failed, and looking back over the last 45 years I'd say so did the exorcism. The ritual, hand-crafted by New York poet and singer Ed Sanders:
The ritual may have to be fine-tuned a little to work effectively, but it's definitely worth another try. Found all this neat stuff at a Church of the Sub-Genius site called Underground Bound, and to see the manuscript in an easily-legible size you'll need to go there.