capital. the scenes of some bizarre and some brutal developments today. >> you're looking at new video in to cnn. anti-government protestors taking to the streets after friday's prayers are greeted by gunfire. this video set to be shot in a neighborhood in western tripoli, win wit witnesses have told us t plainclothes security forces firing live rounds and tear gas, about snipers perched on top of buildings, even artillery fire. now, their accounts can't be independently confirmed since the libyan government tightly controls access to libya, to tripoli, i should say. meantime, moammar gi dauf 50 popped up in the city center in a perch above green square. he told his supporters to prepare to defend libya. we will fight and we will kill