(Reuters) - Wall Street's main indexes opened down on Monday after U.S. President Donald Trump's renewed attacks against Federal Reserve Chair Jerome Powell sparked concerns about the central bank's independence and rattled investors grappling with an escalating trade war.

The Dow Jones Industrial Average fell 236.2 points, or 0.60%, at the open to 38,906.04. The S&P 500 fell 49.8 points, or 0.94%, at the open to 5,232.94​, while the Nasdaq Composite dropped 233.7 points, or 1.43%, to 16,052.764 at the opening bell.

(Reporting by Lisa Mattackal in Bengaluru; Editing by Pooja Desai)