As the official death toll in the Oakland Ghost Ship warehouse fire rose to 30 on Sunday afternoon, crowds gathered outside to set up small memorials and watch as authorities continued their search process inside the building. Several workers in yellow vests and hard hats could be seen carrying shovels around the building’s perimeter, and authorities had blocked off a roughly two-block area with yellow crime scene tape, stopping traffic in the area between International Boulevard, Fruitvale Avenue, Derby and 12th…