There is a carved wooden sculpture at Nikko which is world famous, both as a national treasure, and for the story it represents.
"Hear no evil, speak no evil, see no evil."
It is a reminder to our minds free of harmful and evil thoughts. This is not easy, when the media has a feeding frenzy on evil in nearly any form it can find it. While we cannot ignore what is going on in the world, it is very important that we spend some time free of such influences, so that we can maintain perspective on what is important in life.