Complex sentence: Shopkeepers feel that the city's administrators should give the street's severely deteriorating architecture some much needed attention and organize a marketing campaign in order to attract people back to Karachi's most cultural shopping district.
Split into simpler sentences: Shopkeepers feel that the city's administrators should give the street's severely deteriorating architecture some much needed attention. They must implement and organize a marketing campaign in order to attract people back to Karachi's most cultural shopping district.