Moral relativity is the wrongheaded idea that there is no absolute Right or Wrong, and that anyone can freely use his own conscience to decide what is moral. A moral relativist will not say that theft or murder is wrong, because he believes it is up to the murderer or thief to decide whether his behavior is justified.
Unsurprisingly, moral relativity is exclusively a liberal belief, as conservatives believe that God is the ultimate arbiter of Good and Evil:
"There is a way that seems right to a man, but in the end it leads to death. (Proverbs 14:12)
The Theory of Relativity has generated a huge following by advocates of moral relativism.[Citation Needed] The idea of moral relativity exist independent of (and substantially predates) the theory of relativity, but some moral relativists irrelevantly invoke the theory in attempts to lend legitimacy to this version of morality.[Citation Needed]
Advocates of moral relativity seized on the theory of relativity to legitimize their views.[Citation Needed] Historians such as Paul Johnson wrote about how the theory of relativity caused a sea change, justified or not, in 20th century thought.