Light Yagami's actions as Kira have a significant impact on the public perception of Kira. Initially, many people view Kira as a heroic figure who is ridding the world of criminals. However, as Light's actions become more extreme and he begins to manipulate and kill innocent people, the public perception of Kira shifts. Many people start to see Kira as a dangerous and megalomaniacal individual who must be stopped at all costs. The public becomes divided between those who support Kira's actions and those who condemn them, leading to a complex and evolving perception of the character.