Hemoglobin should be the answer to this question
Anemia can be caused by a great amount of things. The most common reason is through iron deficiency, which is linked to other illnesses that cause anemia. Or, through malnutrition where the patient is not getting the right amount of vitamins or minerals in their diet. The protein hemoglobin contains iron, which is why the hemoglobin levels drop at times when there is anemia
The question is really vague, there could be many answers. But I'm guessing it's hate violence. The definition of hate violence is: "<span>speech or behavior that is aimed at a person or group based on personal characteristics" so lol I guess that'd be it.</span>
