Symbols of mercy in Buddhism? What are the possible symbols of mercy and/or compassion in Buddhism? As always answers with supporting references are appreciated.
Take a look at the 8 auspicious symbols, 

The
Auspicious Drawing, sometimes refereed to as the infinite knot 
represents the intertwining of wisdom and compassion. 



The manji (Japanese Buddhism) is said to represent love and mercy, in certain situations. 
This symbol should not be confused with the swastika, which is completely different.