Anti-war activists in Olympia, Wash., have exposed Army spying and infiltration of their groups, as well as intelligence gathering by the Air Force, the federal Capitol Police and the Coast Guard.

The infiltration appears to be in direct violation of the Posse Comitatus Act preventing U.S. military deployment for domestic law enforcement and may strengthen congressional demands for a full-scale investigation of U.S. intelligence activities, like the Church Committee hearings of the 1970s.