Here's another example to go along with my last post about children being a source of hope.
I'm currently reading a great book called Everything Toltec Wisdom which (among other things) discusses the freedom of our mind when we are children and how it's eventually diminished. Eventually, a child's mind becomes domesticated by family & society, and becomes subject to the "Mitote". This is an abstract "parasite" in our consciousness that binds us with distorted perceptions, fears, & anxieties.
This photo series from Obama's acceptance speech demonstrates the idea of a united human society in which childlike acceptance and freedom are possible.