I don't know what mural you are referring to, but most likely the two figures represent "Truth" (Veritas) and "Deception" (Fallacia or Fraudis). I'm just guessing here. Perhaps if you can tell me where you saw this, I might be able to find out a little more about the actual mural.

Veritas was one of a group of Roman goddesses, the Virtues. It is quite likely that the other woman is another virtue perhaps Prudentia, not something like lying. The Virtues: Auctoritas: "Spiritual Authority" The sense of one's social standing, built up through experience, Pietas, and Industria. Comitas: "Humor" Ease of manner, courtesy, openness, and friendliness. Clementia: "Mercy" Mildness and gentleness. Dignitas: "Dignity" A sense of self-worth, personal pride. Firmitas: "Tenacity" Strength of mind, the ability to stick to one's purpose. Frugalitas: "Frugalness" Economy and simplicity of style, without being miserly. Gravitas: "Gravity" A sense of the importance of the matter at hand, responsibility and earnestness. Honestas: "Respectibility" The image that one presents as a respectable member of society. Humanitas: "Humanity" Refinement, civilization, learning, and being cultured. Industria: "Industriousness" Hard work. Pietas: "Dutifulness" More than religious piety; a respect for the natural order socially, politically, and religiously. Includes the ideas of patriotism and devotion to others. Prudentia: "Prudence" Foresight, wisdom, and personal discretion. Salubritas: "Wholesomeness" Health and cleanliness. Severitas: "Sternness" Gravity, self-control. Veritas: "Truthfulness" Honesty in dealing with others.

I'm not sure about the mural you speak of, but what stood out to me in your question was Veritas, to which I immediately thought of the movie The Boondock Saints, where the two brothers each have a tattoo on their hands, on Veritas, the other Aequitas, (Truth and Justice)