Proceed until you get pinned by a technical MG. Climb the ledge to the right to flank the gunner. After killing it, get down to the street and use the mounted MG to take out the enemies across the street.
Proceed forth and more enemies will appear from the left. Find cover and take them out. There's a lot of cars here that you can shoot and detonate to deal enviromental damage to the enemies. Make your way to the end of the street and enter the building to complete the section.