See no evil, hear no evil, speak no evil. You may be more familiar with that phrasing when it's conveyed by the image of the three wise monkeys. It's an old proverb meant to say that you shouldn't immediately judge things. You must understand them before labeling them as evil. The proverb is used to startling effect when instead of the monkeys we have three priests.
We're all aware of the problems that the churches have had with molestation, and not just molestations, but the cover ups as well. This picture shows us the irony of when we clearly know something is evil, but we choose to do nothing about it. It's quite the opposite of the proverb, which I think is incredibly clever. As clever as this illustration is, let's not forget how disturbing the meaning is behind it.