Original sentence: As a materialist and claiming to be making a scientific analysis, Marx did not understand classes as purely subjective (in other words, groups of people who consciously identified with one another).He published the first volume of Das Kapital in 1867, a few years before the 1871 Paris Commune.The relation of Marx's own thought to the popular "Marxist" interpretations of it during this period is a point of controversy; he himself once said that "the only thing I know is that I'm not a Marxist" (in response to the views of a French Social-Democratic Party).While Marx's ideas have declined in popularity, particularly since the collapse of the Soviet regime, they are still very influential today, both in academic circles, some worker movements, and in political practice, and Marxism continues to be the official ideology of some Communist states and political movements
Edited sentence: As a scientist and materialist, Marx did not understand classes as purely subjective (in other words, groups of people who consciously identified with one another).He published the first tome of Das Kapital in 1867, a few years before the 1871 Paris Commune.The relation of Marx's own thought to the popular "Marxist" interpretations of it during this period is a point of controversy; he himself once said that "the only thing I know is that I'm not a Marxist"(In response to the views of a French Social-Democratic Party).While Marx's ideas have declined in popularity, particularly with the decline of Marxism in Russia, they are still very influential today, both in academic circles, some worker movements, and in political practice, and Marxism continues to be the official ideology of some Communist states and political movements