There's a great All Things Considered piece on Sendak from this week where they talk about how his books arrived right with the cultural revolution of the 60s, and they were part of it. They weren't safe. They weren't nice and sanitized. They had the sort of brutality that encompasses what it means to actually have a child-like understanding of the world, not the idealized notion of "child-like" which grown ups like to nostologize and protect.
But this image below has my all-time favorite Sendak moment:
How's that for appreciating one's fans?