The worst layoffs of 21st-century America affected the finance, retail, and automotive industries the most. Banks cut workers during the Great Recession, Boeing cut workers after Sept. 11, the US Army cut workers during political budget battles, and stores continue to cut workers thanks to Amazon. Using data from an employment consulting firm, 24/7 Wall St. ranked the 27 biggest layoffs—those that affected 20,000 workers or more—in the US during the 21st century. Here are the top 10 and approximately how many workers each affected: