Prosecutors: Grandfather, 71, fatally shot during 22-bullet barrage in Chinatown. ‘An execution,’ says judge ordering no bail for man charged.

A 23-year-old man “calmly” approached a 71-year-old man who was on a walk to grab a newspaper and shot at him at least 20 times, including as he lay helpless on the ground in Chinatown, prosecutors said Thursday.