The lack of belief in objective morality—something that can only be grounded in the character of an objective God—is a poison that will ultimately destroy the ability of ideologically diverse people to live together. If this is to turn around, it must do so one person at a time, at the worldview level.
In R.C. Sproul’s Surprised by Suffering, he comments on the implications for justice when a society rejects objective morality:
If there is no such thing as right and wrong, if there is no such thing as moral obligation, then there is no such thing as justness. If there is no such thing as justness, then ultimately there is no such thing as justice. Justice becomes a mere sentiment. It means the preferences of an individual or a group. If the majority in one society prefers that adultery be rewarded, then justice is served when an adulterer receives a prize for his adultery. If the majority in a different society prefers that adultery be punished, then justice is served if the adulterer is penalized. But in this schema, there is no such thing as ultimate justice because the will of an individual or of a group can never serve as an ultimate moral norm for justice. It can reveal only a preference.
And of course, this subjective view of “justice” as preference is exactly what many people assume these days when they accuse those who argue in terms of objective principles of making power plays—that is, they accuse them of hiding their true goal (i.e., maintaining the structures of power from which they benefit) behind nice-sounding words and “principles” that are merely being used to manipulate people into going along with their preferences.