The tip of the iceberg is a tip-off to what lies underneath even when the whole of the mystery is not yet fully revealed.
The parts of a person we see and experience are a hint at the heart that lies beneath the public persona. It takes only a little bit of intuition and insight to know what is the mask and what is the tip of the iceberg.
A little act of respect in something small hints at a deeper compassion. A little random kindness hints at a big and warm heart underneath.
Imagine what lies beneath undisguised bigotry, overt ignorance, and unending demagoguery.