He attended Honzan hospital 's nurse training school , but moved to Tokyo 's Kameido district in September 1920 after being exposed to socialism from a professor , Oka Sensei . He was a member of Gyōminkai ( Enlightened People 's Society ) , a communist study group , and joined the Nankatsu Labor Union alongside Tanno Setsu . In March 1923 , Kawai created the Tokyo Communist Youth League , the first instance of a group openly labeling themselves as Communists . During the 1923 Great Kantō earthquake , Kawai was reported as having rescued three children who had been trapped under a collapsed house . Amidst the chaos of the earthquake 's aftermath , he was captured on September 2 , 1923 , and a few days later , was killed by police in prison during the Kameido Incident .
1923 Great Kantō earthquake
1923 Great Kantō earthquake
Kawai Yoshitora