Small correction for future watchers, the white army in the Russian Civil War was *not* headed by the Mensheviks. The Mensheviks were a rival socialist party that had mostly either joined with the Bolsheviks or had fizzled out by the time of the Civil War. The Whites in the Civil War were almost exclusively composed of Russians who opposed the Bolsheviks, primarily Tsarists. Obviously it's a small correction but it's worth pointing out.
Nice and clear video! I really like the explanation of how constructivism compares to sculpting. Now, to get it out of my system, there is a problem I have with constructivists and abstract artists and that is the meaning of mono paint "artworks" (like the pure series from 1921). No, I'm not attacking it for being somewhat pretentions... My point is that since colour is fairly subjective, a bending of light by physical science, a mono paintwork carries no meaning, no info (take it from the perspective of colour blind for instance). Contrary to the statement of "it is just colour", one could say no, it is not colour, it is nothing.
I am in love with color, so I do agree with you on one level. At the same, remember that these artists used pure hues of primary colors. For them, that was a way of treating color in its least variable, most scientific way. For aficianados of color -- like me, and I suspect you -- the subjectivity is part of its magic.