So clearly, governments have now decided to build concentration camps to deal with overpopulation, so I wanted to try and design the perfect concentration camp to exterminate all NEETs, unvaxxed, and other genetically inferior subhuman waste. Concentration camps are a very good idea because you can't just kill people in the streets because dead bodies are full of fats and proteins and other high value nutrients that bacteria and viruses can use to spread and mutate and that would lead to all sorts of problems in high population density areas, and killing people violently leads to panic, PTSD, and other issues. Concentration camps deal with those problems very well

The rules are simple: the camp needs to be cheap, it needs to use existing or at least realistic technology so as to not waste too much time and resources on building it, the people in the camp are not allowed to enjoy themselves in any way, the people in there need to die in a way that's eco friendly, so no poison, gas, or bullets that contain lead and cost money to produce and the people in the camp need to spend what very limited caloric intake is provided to them to bring about their own death

I have dedicated a significant area of the camp to digging holes. The campers will spend most of their time digging their own graves, burying the waste they produce and so on while being given only the bare minimum amount of calories required to survive. Eventually they will die of exhaustion and the next group of people to be transported to the camp will bury them and so on

Another issue is that of guarding the camp, but that's actually not a problem. As long as the camp is located in a remote enough area such as a desert, even if the campers escape they will just end up starving to death which is exactly what we're trying to achieve in the first place. The campers have no real incentive to revolt as the camp would start smelling like shit and dead bodies which would serve as motivation to keep digging holes