You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is "Hitler intended to improve German race by killing the weak and defective"- this is an example of: and explain in detail?
Negative eugenics has little application in civilized world. People suffering from serious hereditary diseases may be sterilized or otherwise debarred from producing children. Ref: Park 21st edition page: 767.