May 30 (Reuters) - U.S. stock index futures dropped on

Friday after U.S. President Donald Trump said China had violated

an agreement on tariffs with the United States.

"China, perhaps not surprisingly to some, HAS TOTALLY

VIOLATED ITS AGREEMENT WITH US. So much for being Mr. NICE

GUY!," Trump said in a post on Truth Social.

At 08:16 a.m. ET, Dow E-minis were down 153 points,

or 0.36%, S&P 500 E-minis were down 26.5 points, or

0.45%, and Nasdaq 100 E-minis were down 102.75 points,

or 0.48%.

(Reporting by Shashwat Chauhan in Bengaluru; Editing by Devika

Syamnath)