Another rock attack on a moving vehicle. Last night a female passenger in a taxi had her face sprayed with glass. I recall a former senior police officer saying with all the flair of a used car salesman "I reckon crime prevention is the way to go". So, who exactly is at fault for failing to prevent this crime? Car manufacturers for failing to install armour-plate glass on all vehicles? The public for allowing such dangerous weapons as rocks to exist in society? Is it possible that some advocates of crime prevention have rocks in their heads?