BOBIGNY, France (Reuters) - Rioters shot at police and fire crews in the worst night in a week of violence in poor Paris suburbs, as France's conservative government struggled to respond to the unrest. Youths rampaged in nine poor suburbs north and east of Paris, home to North African and black African minorities frustrated at their failure to get jobs or recognition in French society, leaving a trail of destruction behind them. "It's a dramatic situation. It is very serious and we fear that the events could even get worse tonight," said Francis Masanet, secretary general of the UNSA police...