If it is true that...

The proletariat is the only really revolutionary class in face of modern industry

Then it must be true that...

The lower middle class fights against the bourgeoisie to save their existence as fractions of the middle class

If it is true that...

The lower middle class fights against the bourgeoisie to save their existence as fractions of the middle class

and

The proletarian movement is a self-conscious, independent movement in the interest of the majority

and

The struggle of the proletariat with the bourgeoisie is initially a national struggle

Then it must be true that...

Every form of society has been based on antagonism between oppressing and oppressed classes

If it is true that...

The lower middle class fights against the bourgeoisie to save their existence as fractions of the middle class

Then it must be true that...

The proletarian movement is a self-conscious, independent movement in the interest of the majority

If it is true that...

The lower middle class fights against the bourgeoisie to save their existence as fractions of the middle class

Then it must be true that...

The bourgeoisie is unfit to be the ruling class as it cannot assure an existence to its slave within his slavery