【明報專訊】THE acid attacker has again thrown a bottle of corrosive liquid onto a street in the Mong Kok pedestrian area in defiance of the law, injuring 24. The attacks have damaged Hong Kong's reputation as the safest city. He is now an enemy of the public. What he has done has aroused everyone's indignation. The government, the police and the public should join forces to deal with the matter. It is necessary to go to extraordinary lengths to bring the acid attacker to justice so that citizens and visitors will again enjoy the freedom from fear.