radiator of evil
I have visual representation of the two common ways the humans respond to aggression or stress coming their way. The basic automatic response is to reflect it back. Actually there's a scientific research telling us the reaction will be stronger than action. This naturally escalates tension. I picture this as a ball in the pinball machine being hit stronger and stronger.
The other picture is of radiator, like the ones installed on CPUs. You heat it on one side, but it keeps calm and quietly radiates the heat into the space. One can do the same thing with stress and agression coming from other people: not reflect it but calmly radiate it into nothingness. To a certain extent of course. Still this lowers the tension and makes society better.