the biggest losers on the dow were thend majortrials like caterpillar, boei, and 3m. bob pisani reports tonight on that sell off from the new york stock exchange. >> scks closed right around their worst levels of the session with the dow down more than 70 points. that's right, 700 points. the markets will clearly concerned about two things. number one, technology. and number two,twtrade. bigpresent donald trump aouound he be imposing tariffs of up to 6 $ billion on chinese goods over the next few weeks. no word on which goods. but there would be a 30 day period to negotiate tse terms. shares of mining stocks and metals got slammed since tariffs weeksirst announced a few ago. looks like they are not as tough they people thoug might be facebook is facing a who socl media group is. that's weighing heavily on all the other social medi stocks. part of it rket losttsa i i tem there is nothing taking its place. the subsectors, semiconductors and the fang names, febook and apple and amazon stopped advancing and in most cases rethey versed. once the fang stocks started going u

boei boeing, and amazon losses. it's the president who is pulling the stock down. about an hour ago president trump tweeted, i have stated my concerns with amazon long before the election. unlike others, they pay little or no taxes to state and local governments and use our postal system as their delivery boy causing tremendous loss to u.s. and putting thousands of retailers out of business. mr. trump was indeed critical of amazon before the election. he's been pretty straight forward for his dislike for jeff bezos who also owns "the washington post," and "the washington post" is critical of president trump. here is donald trump back when he was a candidate. >> every hour we're getting calls from reporters from "the washington post" asking ridiculous questions, and i will tell you, this is jeff bezos who owns amazon. he's using "the washington post" for power so that the politicians in washington don't tax amazon like they should be taxed. he wants political influence so amazon will benefit from it. that's not right and, believe me, if i become president, oh, do th