https://www.reuters.com/article/us-crossfit-reebok/crossfit-chief-sorry-for-tweet-on-floyd-killing-after-report-of-reebok-split-idUSKBN23F13U >CrossFit founder Greg Glassman has apologized for a tweet that equated the police killing of a black man in the United States to the COVID-19 pandemic, after it drew widespread criticism and resulted in footwear brand Reebok ending its partnership with the fitness regimen.