SAN FRANCISCO (KGO) -- A group of San Francisco residents is pleading for city officials to intervene after an uptick of alleged sex workers in their neighborhood. Luz Pena: "Do you think that it's going to get to the point that residents are going to do more than call 911?"Ana has two kids and says she struggles to explain to them what happens outside their home. "It's like every night pimps and prostitutes come and take our street hostage and neighbors are shut in," said Paula