I remember that mission. It's fairly close to the first one. You only needed to spray 3 tags to go on to the next mission...
Have you gone back to the coldusak-the hood? If there are no missions there then go to Big Smoke's house (which is up the street West from the hood) and see if he has missions. Otherwise I do not know.
South Park, Charmed, Buffy The Vampire Slayer / Angel, Tru Calling, Family Guy, TrippingTheRift, FreeForAll, Futurama, Jackass, Lost, That 70's Show, Celebrity Deathmatch