The essay in text form: http://theanarchistlibrary.org/library/osugi-sakae-the-chain-factory
Osugi Sakae biography: https://libcom.org/library/osugi-sakae-biography

Ōsugi Sakae was a Japanese Anarchist born in 1885. In addition to study socialism and the works of Bakunin and Kropotkin-whose autobiography he translated into Japanese- he taught himself several langauges including Italian, Esperanto, English, Russian, French and German. He was imprisoned many times throughout his life for anti government activities, including taking part in a protest in 1906 against high trolley fairs. He was spared from execution during the High treason incident which claimed the lives of other prominent Japanese Anarchists, because he was already in prison for taking part in a demonstration during the earlier Red Flag incident.

He was killed in 1923 in the aftermath of the Kanto earthquake when police and right wing gangs took advantage of the chaos to kill many anti government activists and ethnic Chinese and Koreans.