The deaths caused by Kira in the anime "Death Note" have a significant impact on the psyche of the general population. The fear of being targeted by Kira and the uncertainty of who could be next lead to widespread paranoia and distrust among people. Additionally, the notion of a single individual having the power to decide who lives and who dies creates a sense of helplessness and powerlessness among the general population. Overall, the presence of Kira creates a climate of fear, suspicion, and moral questioning that deeply affects the psyche of society.