EARLY AMERICAN ANARCHISM VS. DR. KARL MARX

Bakunin and Kropotkin weren't the only anarchists to oppose the centralization of power under a Marxist system, just the best known. There were several prominent American anarchists in the 19th Century who also opposed Marxism, including Ezra Heywood (1829-93):

In the 1st issue of the paper, Heywood warmly approved the declarations
of the International Workingmen's Association at its gatherings
in Belgium and Switzerland. especially those which called upon the
members everywhere to "obliterate" nationalism and "abolish" patriotism.
which he called "the most barbarous and stupid of virtues." He
sounded one note of disapproval. however. reflecting the bitter dispute
which had already split the anarchist and socialist factions in Europe:
"It is not pleasant to see Dr. Marx and other leaders of this great and
growing fraternity lean so strongly toward compulsory policies. If the
International would succeed it must be true to its bottom idea-voluntary
association in behalf of our common humanity."

SOURCE:Men against the State : the expositors of individualist anarchism in America, 1827-1908 / by James J. Martin. Page 117