Palantir, the data analysis and technology firm whose contracts with the federal government are expanding, and Coinbase, a cryptocurrency firm that donated to the president’s inauguration, also sponsored the event. Oracle, a database company whose co-founder is a close friend of Mr. Trump’s, received a shout-out on Saturday as a sponsor.

See photos of Trump's military parade as 'No Kings' protests take place across the U.S. Protests in all 50 states coincided with a military parade featuring more than 6,000 soldiers.