LATE evening fell along the length of a river dividing Jl. Gajah Mada and Hayam Wuruk in Jakarta. A group of teenage children rebelled against the night, not wanting to sleep. The edge of a canal that used to be called Molenvliet is their place of freedom, where they can gaze across the entire area that is popular as a red-light zone, with cigarettes in hand. "It's nice to just hang out here and smoke," said a fifth-grade primary school student who