The decade of the 2010s ended on a trio of events that shook America: an insurrection at the US Capitol, a deadly global pandemic and widespread antiracism protests, writes Timothy Naftali. “Who could doubt that due to this terrible trifecta 2020 was a year destined to join the ranks of 1941, 1945, 1968 and 2001 in US history?” he says in an essay accompanying the CNN original series, “The 2010s.”