With tanks on display and jets flying overhead, President Donald Trump praised the military and urged young people to join the armed forces on Thursday in a celebration of Independence Day that critics said the president had politicized.
Trump, a Republican who admired flashy displays of national pride and military strength in France, dismissed concerns ahead of the ceremony about the expense and militaristic overtones of the event outside the 97-year-old Lincoln Memorial, a symbol of national unity.
WATCH: Tanks, fighter jets and fireworks for 4th of July in DC
“Our nation is stronger today than it ever was before. It is its strongest now,” Trump said from a platform in front of the famous memorial, echoing a theme he uses at campaign rallies.
He spoke positively about the military, and with well-planned choreography, told stories about each branch to introduce separate fly-overs of military aircraft.
“For over 65 years, no enemy Air Force has managed to kill a single American soldier. Because the skies belong to the United States of America,” he said.
The speech was to be followed by a concert on the U.S. Capitol lawn at the opposite end of the National Mall and fireworks, weather permitting.
Thousands of supporters wearing Trump’s signature “Make America Great Again” hats, along with opponents questioning the cost of the event, poured into the U.S. capital despite scorching temperatures and intermittent rain, while a diapered “Baby Trump” balloon sat next to a banner calling Trump a traitor.
Protesters burned a U.S. flag in front of the White House.
WATCH: Trump says America will plant U.S. flag on Mars ‘someday soon’
“People are coming from far and wide to join us today and tonight for what is turning out to be one of the biggest celebrations in the history of our Country,” Trump tweeted early on Thursday, seeming to encourage crowds to descend on the monument-lined mall.
Ahead of the speech, Democrats accused the president of staging an out-of-place campaign rally, aware he has a history of veering off script with sharp partisan attacks even at events that are not meant to be overtly political.
Flights were to be suspended at nearby Reagan National Airport from 6:15 p.m. to 7:45 p.m. ET (2215 to 2345 GMT) and then again for the later festivities.
Trump supporters and opponents carried American flags and wore red, white and blue outfits.
“I think what Trump’s doing with the tanks, all the flyovers, I think it’s great,” said Brandon Lawrence, his face painted with the colors of the American flag.
Some at the White House had worried about the crowd size, according to an administration official.
WATCH: Trump says ISIS caliphate is ‘100% gone’ in Syria
In January 2017 Trump fumed about reports that the crowd at his inauguration ceremony in front of the Capitol was smaller than it was for President Barack Obama.
Perhaps with the crowd size in mind, Trump sent out tweets urging people to attend and saying the wait would be worth it. As it happened, the crowd lined both sides of the reflecting pool in front of the memorial.
Opponents were not impressed.
“This is costing us millions and millions of dollars. We the taxpayers are paying for it, for Donald Trump to use our military as a prop. And that’s just not right,” said Medea Benjamin, co-founder of the women-led peace group Code Pink.
Republican political groups were given prime tickets for Trump’s speech, and the Washington Post reported that the U.S. National Park Service diverted $2.5 million in park entrance fees to help pay for the event.
Democratic presidential candidate Senator Bernie Sanders weighed in with criticism: “This is what authoritarians do: @realDonaldTrump is taking $2.5 million away from our National Park Service to glorify himself with a spectacle of military tanks rolling through Washington,” he wrote in a tweet.
Trump played down the expense.
WATCH: Trump says U.S. ‘quest for greatness’ led Alexander Graham Bell to create telephone
“The cost of our great Salute to America tomorrow will be very little compared to what it is worth. We own the planes, we have the pilots, the airport is right next door (Andrews), all we need is the fuel,” he posted on Twitter on Wednesday. “We own the tanks and all. Fireworks are donated by two of the greats. Nice!” Andrews is the name of a nearby military base.
The July 4th holiday celebrates the U.S. founders’ declaring independence from Britain in 1776.