Left to right – Bukharin, Lazar Kaganovich, Anastas Mikoian, Aleksei Rykov, Valerian Kuibyshev, Iosif Stalin, Kliment Voroshilov, and Ian Rudzutak, May Day 1926 Published May 1, 2015 at 2799 × 1718 in Nikolai Bukharin on the criterion of practice in epistemology ← Previous Next → With lightning telegrams: Share on Facebook (Opens in new window) Facebook Share on X (Opens in new window) X Share on Tumblr (Opens in new window) Tumblr More Share on Reddit (Opens in new window) Reddit Share on Pinterest (Opens in new window) Pinterest Like this:Like Loading...