[I was inspired by the Russian-revolutionary poster in Steve Caplin's "Art & Design in Photoshop."] Extract horse and man. Reorient fingers and arm using Puppet Warp, Liquify, Heal.
step 2 of 6
Create a pair of shoulder-to-shoulder lefties, one brandishing a hammer and one waving a sickle.
step 3 of 6
Convert to black and white and copy to form an army of lefties. (I had to squish the sickle to keep it away from the neighboring hammer.) Add a duplicate layer on top of each row with Filter>Sketch>Photocopy applied (foreground black, background cream) and blending mode of Multiply. Play with brightness and opacity of the various elements.
step 4 of 6
The layout of the text determines the positioning of the red slash. Layer of black shadow along the red edge in blend mode of Dissolve creates the speckling.
step 5 of 6
Add the various elements as black and white images with Photocopy layers on top -- except for the army star which is just Linear Burn.