“[Marx was] the magnificent philosopher of working class violence.”
As quoted by Mussolini in From George Sorel: Essays in Socialism and Philosophy by John L. Stanley (1987) p. 4.
Undated
Help us to complete the source, original and additional information
Benito Mussolini 127
Duce and President of the Council of Ministers of Italy. Le… 1883–1945Related quotes

Rodong Sinmun (25 December 1995) "Respecting the forerunners of the revolution is a noble moral obligation of revolutionaries" http://www.korea-dpr.com/library/206.pdf
“Said Marx, "Don't be snobbish, we seek to abolish
The 3rd class, not the 1st."”
"M", from Logue's A. B. C. (London: Scorpion Press, 1966)

Anarchism or Socialism (1906)

Capital and the State (1924)

“The working class must be emancipated by the working class.”
The Socialist Party and the Working Class (1904)
Variant: War, bloody war, must be ended by the working class.
Context: The working class must be emancipated by the working class.
Woman must be given her true place in society by the working class.
Child labor must be abolished by the working class.
Society must be reconstructed by the working class.
The working class must be employed by the working class.
The fruits of labor must be enjoyed by the working class.
War, bloody war, must be ended by the working class.

“A revolution is an insurrection, an act of violence by which one class overthrows another.”
Chapter 2 https://www.marxists.org/reference/archive/mao/works/red-book/ch02.htm, originally published in Report on an investigation of the peasant movement in Hunan http://www.marxists.org/reference/archive/mao/selected-works/volume-1/mswv1_2.htm (March 1927), Selected Works, Vol. I, p. 28.
https://www.marxists.org/chinese/big5/nonmarxists/mao/19270300.htm.湖南農民運動考察報告
Quotations from Chairman Mao Zedong (The Little Red Book)
Context: A revolution is not a dinner party, or writing an essay, or painting a picture, or doing embroidery. It cannot be so refined, so leisurely and gentle, so temperate, kind, courteous, restrained and magnanimous. A revolution is an insurrection, an act of violence by which one class overthrows another.