Of course...
This is not racist but a clever subliminal anti-communist propaganda straight out of McCarthy's red scare, duh!
Besides that, the concept is fun as always, physics are great and the player made levels here are really fun and engaging. I loved the auto levels that are packed with it, and I am happy to learn that the level making community is that strong.
Perhaps even another player pack might be great, I am not even sure how to add to the game concept at this point. Refining graphics? More shapes (Triangles, polygons, ellipsoids)? Make the step towards 3D and ruin the game like so many developers did in the 90s?
All in all, a great and satisfying puzzle game that is not too easy but also not too hard to be enjoyable.