Why Target Killing Only in Karachi???

Karachi is a city where different Mafias are working very effectively. These may Include land mafia, drug Mafia etc. These are very well organized and they also have public support on the basis of ethnic identity. In karachi people from all over Pakistan are living and working. Due to that ethnic identity karachi has become a battle field where everyone wants power. Three of our big political parties PPP, ANP and MQM also seems to be engaged in it. Rather then resolving this issue they are still fighting with each other. They should sit together and take out a solution to make karachi peaceful otherwise there will be a big loss than they faced in last three to four days.