Expressing anger is a form of public littering.
She closed her eyes and jumped. For a moment she felt herself hang suspended, free of everything. Then gravity took over, and she plunged toward the floor. Instinctively she pulled her arms and legs in, keeping her eyes squeezed shut. The cord pulled taut and she rebounded, flying back up before falling again. As her velocity slowed, she opened her eyes and found herself dangling at the end of the cord, about five feet above Jace. He was grinning.'Nice', he said. 'As graceful as a falling snowflake.
Usually when people talk about the trickle-down theory, it has to do with economics. The richer people at the top of a society become, supposedly, the more wealth there is to trickle down to the people below. It never really works out that way, of course, because if there are 2 things people at the top can't stand, they have to be leakage and overflow.