REWARDS - Respect
Feel free to recruit some Grove Street members for some cannon fodder later on. Get in a car with Sweet and drive to the yellow blip on the map. You find out that B-Dup doesn't live here anymore, but lives in Glen Park now.
Head to Glen Park and initiate a gang war by shooting some Ballas. Make sure to keep an eye on Sweet's health throughout the war. Take out the three waves of Ballas and the territory becomes yours. After you gain the territory, the focus moves over to a house across the street. Remember that if Sweet dies, you fail the mission. Take out all of the guards in front of the house with an AK or M4. Once you take out the final guard, head to the marker to confront B-Dup. Watch the cutscenes and mission complete.