In the interests of everyone the artist had a responsibility to use his medium well. In the Tibetan culture, most of the paintings are of deities or Buddhas, and they try to send a message of the value of the spiritual.
Basically, the Buddhist attitude is that you should not accept certain things through sheer faith. And for that you need a skeptical attitude. Buddha himself made this clear to his followers. He said you should not accept those things I taught out of respect for me, but rather through investigation by yourself.
Therefore we have to make effort through well through every corner, media people, education sort of institution, and family, parents, everywhere. It is our common goal, common interest promote more compassion toward the world.