Who was that masked man with a saw?
LONDON -- As is so often the case, the trickiest part came when he had to explain himself to his family.

"I got kind of a lukewarm response," said the masked Englishman who calls himself Angle-Grinder Man and who has been trawling London for four months dressed in a homemade superhero outfit, complete with gold lame underpants and cape, removing security boots from illegally parked cars.

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As a one-man vigilante force, Angle-Grinder Man, who takes his name from the boot-destroying circular saw he wields, has made only a modest impact: by his own estimates, he has freed about 20 cars so far (he does it part time). But his campaign against the city's effort to immobilize cars for parking violations and other infractions has touched a nerve in a city of strict parking regulations, zealous traffic police, ubiquitous speed cameras and car owners who are becoming increasingly aggrieved at what they believe is mean-spirited law enforcement.