Squawk Box anchors discuss the massive sell-off in stock markets, after China retaliates in the trade war with the U.S, raising tariffs on $60 billion dollars worth of goods. The Dow tumbles 600 points, while the S&P 500 notches up its worst day since early January, losing more than one trillion dollars in market cap since May 3rd. Tech stocks lead the losses, as Beijing targets products such as cellphones and laptops, with Apple closing down nearly 6 percent, suffering its worst day since 2013. US bond yields fall amid speculation the Chinese government could sell its Treasury holdings, while the yield curve inverts as fears of an economic downturn rise. Bayer the one stock in focus after a California court orders the German chemical group to pay 2 billion dollars over claims its Roundup product caused cancer.See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.