The Rook-No.53 had created an electronic defence system. He thought that all nations should have it, as it would have ensured peace. Treasonable thoughts perhaps, but at that point No.53 had committed no crime, the crime occured when a petty bureaucrat let his bag get swiped! So why was the Rook-No.53 brought to the Village? It might be that the plans for the electronic defence system, that was in that bag, was swiped by an agent working for the Village, that "The Beam" used in 'Hammer Into Anvil' is that electronic defence syetem!
It's like the watchmaker-No.50 "I've met no-one here who has commited a crime." In the case of the Rook, he may very well be right!
Be seeing you