At the very least pressing charges establishes a history of behavior with this guy. Also it ruins his day and probably costs him some lawyer fees. That way when he does it again and again, it becomes a repetitive behavior and eventually he goes down for some serious time.
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Bikes: 1996 Eddy Merckx Titanium EX, 1989/90 Colnago Super(issimo?) Piu(?), 1990 Concorde Aquila(hit by car while riding), others in build queue "when I get the time"