to crowdsource information about sb or sth (typically as a form of vigilantism resulting in doxing) (abbr. for 人肉搜索[ren2 rou4 sou1 suo3]) / human (used attributively, as in 人肉盾牌[ren2 rou4 dun4 pai2], human shield)
lit. "Why don't they eat meat?" (said by Emperor Hui of Jin 晉惠帝|晋惠帝[Jin4 Hui4 di4] when told that his people didn't have enough rice to eat) / fig. (of people from higher class etc) to be oblivious to other people's plight