THE grey-haired man is like a celebrity. Almost all the electric-powered train (KRL) passengers in the economy class of Coach 3 on the Bogor-Kota route are familiar with the middle-aged man. In this carriage he is always welcomed by smiles and handshakes. If the train is full, there is always someone who would stand and invite him to sit down.

His name is Abu Ahmad. The security officer who works in the Menteng area of Central Jakarta is a well-kn