The issues of Karachi are complex including quota system and settlement of unemployed from northern Pakistan in illegally occupied private and public lands. The Bhutto's 1970s nationalization destroyed the industrial and business class in Karachi who had built factories and banks and they were taken over by feudal landlords whose lands were never distributed to landless peasants. Bhutto won on socialism but never implemented the main aim of socialism i.e. distribution of feudal lands to the landless peasants. These nationalized industry and banks were looted and later sold to other people and never returned to their original owners. The quota system was implemented to stop the educated people with skills getting the jobs on merit but now it was where your parents were born as the criteria for the jobs. Then even the professional colleges were under quota system to stop qualified students to get admission to these colleges. The 1970s gave rise to a movement that culminated in MQM in the 1980s.