The idea is to find symbols for a number of concepts:
Growth
Growth of cities - can take images of urban overcrowding, shanty towns, traffic, pollution;
In the natural world, a good image to show growth is a mushrrom or similar - a plant that seems to stretch to the light
Excess
An image of binge drinking; drunken people on streets;
An over ornate structure can demonstrate excess.
Crime
A beaten body;
A trashed shop after rioting;
Mass graves;
Silence
Person praying;
Footballers around the centre circle at a football match in memory of a deceased player;
Sea floor - coral or similar;
Poverty
Shanty towns;
Inside of a crowded dwelling;
Malnourishment - bloated belly on children
