Hours after fires and looting damaged about 300 businesses and burned about 150 vehicles, neighborhood organizers across the city spontaneously brought people to the affected places to sweep debris, board windows, and comfort the afflicted. On Facebook and in City Hall, from Highlandtown to Reisterstown Station and from Taylor Heights to Yale Heights, people converged on Sandtown-Winchester, Martin Luther King Jr. Boulevard, and North Avenue with shovels and brooms, trash bags, cold drinks, and food. Public Works Director Rudy Chow deployed city workers in the wee hours. Some 2,000 volunteers joined them by late morning so that the intersection of North and Pennsylvania avenues was so crowded that vehicle traffic could not pass. People were happy, though, and hopeful and helpful.