Why did Georges Clemenceau lose support from the French Socialist Party?

Georges Clemenceau lost the support of the Socialist Party primarily due to his aggressive handling of labor unrest during his first term as premier (1906–1909).1

When a miners' strike in the Pas-de-Calais region threatened to cause disorder in 1906, Clemenceau resolved to use the military to suppress the labor action. This decision to employ force against workers alienated the Socialists, leading to a definitive break between Clemenceau and the party, which he punctuated with a notable speech in parliament. His reputation as a "strong man" was further cemented by this ruthless approach to domestic strikes, which stood in stark contrast to the antimilitarist and pro-labor sentiments held by the Socialist movement at the time.12