Chief Bratton managed to get the FAA to make a temporary no-fly zone over the Staples Center, (below 2500' for a couple square miles), which was smart. You can imagine the bad
PR he would get if a couple crashed into each other and landed flaming on the crowd.
The cemetary did not present that problem. Hell, if luck prevailed they would just land next to a freshly-dug hole. No muss, no fuss. .