An injured cameraman is being attended to during a fire fight between police and gang members near Karachi's Lyari area April 29, 2012. At least 20 people including four police officials have been killed and 55 were injured during the last three days in the exchange of fire between police and gang members, local media reported. REUTERS/Athar Hussain (PAKISTAN - Tags: POLITICS CIVIL UNREST CRIME LAW MEDIA)