How would you describe someone who keeps blaming someone or something for something tragic and believes that person was responsible for that tragedy without no actual proof and that everybody else knows for a fact that the person is responsible?
The person you described can be characterized as someone who exhibits the traits of being a "blamer" or "scapegoater." These individuals tend to constantly assign blame to others or external factors for tragic events or outcomes, even though there is no concrete evidence to support their claims. They firmly believe that a specific person or thing is responsible for the tragedy, while the majority of people possess factual knowledge that clearly contradicts their belief.
Now, to better understand why this person engages in such behavior, it is important to consider some psychological theories. One possibility is that they are experiencing a cognitive bias called "attribution error." Attribution error occurs when individuals incorrectly ascribe the causes of events to certain people or external factors, rather than the appropriate sources. In this case, the individual may harbor personal biases, preconceptions, or even a desire to shift blame away from themselves or their own responsibility.
It is worth noting that constantly blaming someone without any actual proof can be both harmful and unfair. It can lead to misunderstandings, strained relationships, and a lack of resolution for the tragedy at hand. Advocating for evidence-based conclusions and encouraging open communication and discussion can contribute to a fair and impartial understanding of complex situations.