AMERICAN CARNAGE: AN INDEX.

• Position: SMOKING GUN

Here are some metrics of the United States after four years of Donald Trump:

Unemployment rate in January 2017, when Trump took office: 4.8 percent.

Unemployment rate in April 2020: 14.7 percent.

Number of Americans who were behind in their rent, as of mid-September: 8.3 million.

Number of Americans who lacked health insurance in 2019: 29.6 million, or 9.2 percent of the population.

Number of Americans who lost jobs with employer-sponsored health insurance as of June 2020: 7.7 million, and 6.9 million dependents.

Increase in wealth by U.S. billionaires in first six months of 2020: $845 billion, up 29 percent.

Increase in the number of Americans living in poverty since March: 8 million.

Personal wealth of top 1 percent of U.S. population: $34.23 trillion.

Personal wealth of bottom 50 percent of U.S. population: $2.08 trillion.

Number of Americans who reported in September 2020 that they lost work because the pandemic made their employer lose business or close down: 19.4 million.

Number of Americans who said in August that there were times during the last week when they did not have enough to eat: 22.3 million.

Amount of carbon dioxide in the atmosphere as of September 2020 (350 ppm is the oft-stated upper limit): 411.29 ppm.

Amount of atmospheric carbon dioxide in 2016...