in pot as it warms then boils.
Guns, mass shootings get attention but many thousands are killed each year.
Politics, division is more prevalent each year and stalls any meaningful accomplishments.
Population, continues to increase while the rich get richer and the poor get poorer.
Water, rises in a linear speed due to things that we need to do something about.
There are many more pertinent analogies.
Here is a link that might be useful: James Hansen: Why I must speak out about climate change