Thousands gathered on the National Mall on Sunday for a day of prayer, worship music and patriotic speeches for an event celebrating the nation’s 250th anniversary that supporters hail as a public affirmation of faith in America but critics view as an exclusionary display that blurs the line between religion and politics.

The increased security presence was visible with forces from multiple departments lined up on the mall. WASHINGTON — Thousands of people gathered on the National Mall Sunday for a Freedom 250 prayer and rededication event honoring the nation’s upcoming 250th birthday, marking the first Freedom 250 event of the summer season in Washington.