Final answer:
Western democracies highly value individual liberty and democracy, which are challenged by totalitarian regimes that prioritize state power over personal freedoms.
Step-by-step explanation:
The highest values prized by Western democracies that Totalitarianism challenges are individual liberty and democracy. In Western democratic systems, there is a strong emphasis on the belief that an orderly society can coexist with the preservation of individual freedoms. This contrasts with totalitarian regimes, which often prioritize the consolidation of power and the interests of the state over personal freedoms and democratic processes.
In a totalitarian state, the ideals of community decision-making and the good of the community as defined by the government often override individual desires and civil liberties. This opposes the democratic value of individualism and the balance sought between order and freedom. Consequently, totalitarianism directly conflicts with the core American values of individual rights, limited government, and the protection of civil liberties.