As part of the commemoration of the 140th anniversary of the Metropolitan Police Department, monthly magazine Bungei Shunju polled some 50,000 active-duty policemen on the 100 most significant crimes, incidents and disasters since 1874. The magazine received approximately 45,000 responses, and published the results in its April issue.
Of the top 10 incidents picked by the respondents, seven occurred in the current Heisei Era (1989~), with two of the remaining three occurring in the mid-Showa Era (1926-1989) and one in the Meiji Era (1868-1912). In descending order, here are brief introductions to those incidents:
1) The Aum Shinrikyo (Supreme Truth) nerve gas attack on the Tokyo Subway (20,999 votes).