Communists would have no clue what to do with DNA, but Technocrats do. Technocrats in China are harvesting DNA from every known people group in every locality and race in the world: blacks, whites, Hispanics, Asians, Europeans, Africans, Aussies, down to Aborigines in the Outback. Why? To develop selective bioweapons to target certain groups.
This article is a few years old, but is a good primer about Smart Dust. The technology and the industry forming around it is huge and totally transformative. Of course, should not be surprising that DARPA started this in the first place, for military applications on the battlefield. Then, Technocrat scientists took it from there.