There are significant political differences between the industrial working class [in decline], the proletariat [growing globally] and the masses [the shifting but productive and creative site of political alliances].
Badiou considers the ‘masses’ [potentially the inclusive realm of communization] to be the crucial category here.
The masses becomes the generic site of one for all for one. It provides the focus and leverage for the communization process. Badiou calls this ‘movement communism’.
‘Class’ is an analytical and descriptive concept, one that is ‘cold’. ‘Masses’ conceptualizes the urban riots that took place across Europe and North America in the twenty twenties.