Gta liberty stories Mission #3 Dealing revence

Mission 3: Dealing Revenge
Given by: Vincenzo Cilli
Location: Atlantic Quays, Portland
Reward: $500 + Baseball Bat (unlocked at safehouses)
Mission Description
After completing the previous mission ("Slacker"), Toni returns to Vincenzo’s warehouse. Vincenzo is furious because the dealer Toni just dropped off in Chinatown was murdered by the Sindacco Crime Family. To re-establish the Leone family's dominance, Vincenzo orders Toni to head back to Chinatown and take out the Sindacco dealers who have moved into their territory.
Objectives
Go to Chinatown: Drive to the alleyway behind Mr. Wong’s Laundrette.
Kill the first dealer: You are introduced to the hand-to-hand combat mechanics here. You must beat the first dealer to death (or use a weapon if you have one).
Eliminate the remaining dealers: Two more Sindacco dealers are marked on your mini-map. You must track them down and kill them to complete the mission.
Why the confusion?
The image you uploaded is a thumbnail for Mission 4: Snuff.
In Snuff, you are tasked with killing a Sindacco enforcer at a construction site to help JD O'Toole (the man in the suit in your image) defect to the Leone family.
This mission is significant because it's where you first get a Pistol from Ammu-Nation and get to keep the Hellenbach GT car.