Light Yagami's actions in the anime "Death Note" have a significant impact on the balance of power between criminals and law enforcement. By using the Death Note to eliminate criminals, he initially appears to be helping law enforcement and reducing crime rates. However, his actions soon escalate to targeting those he deems as obstacles to his vision of creating a utopia free of crime, which blurs the line between justice and vigilantism. This leads to increased fear among criminals and law enforcement, as well as a rise in tension and suspicion between the two groups. Ultimately, Light's actions challenge the traditional roles and methods of both criminals and law enforcement, disrupting the balance of power in the process.