I do feel sorry for those people frightened by the dog. And I have been tried to train the dog in a good manner for a long time. He is improving much, and becoming a good dog. 8 out of 10 people will like to watch and pet him. But this thing is strange. The dog hates only THAT man. He is the repair man in the building. He may have hurt the dog before. This is only a guess, but it is possible. And we know, in common sense, an animal who is in danger will choose to run away or retreat. This man did not when the accident happend. I feel sorry for both of my dog and the man. And I guess the man was on purpose to make the dog angry and to make a fuss.