As the national anthem played at the annual White House Easter Egg Roll, CNN reporter Daniella Diaz noticed something unusual.

Donald Trump and his wife Melania stood together with their son, Barron -- but at first, only two of them had their hands over their hearts.

Video shows Melania Trump subtly nudging her husband to remind him of the tradition. He quickly corrects himself.

Twitter erupted with opinions about the quick nudge. Most people criticized the president for not lifting his hand during the national anthem:

This isn't the first time a president has received criticism for his hand placement. In 2014, Barack Obama came under fire for saluting a soldier with a coffee cup in his hand.

The Trump administration has been under especially heavy scrutiny regarding this year's Easter Egg Roll since a report from the New York Times stated that the White House was struggling to plan the event.

See photos from the Easter Egg Roll:

First Lady Melania Trump reads a book during the 139th White House Easter Egg Roll on the South Lawn of the White House in Washington, DC, April 17, 2017. / AFP PHOTO / SAUL LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images) ▲ WASHINGTON, DC - APRIL 17: White House Press Secretary Sean Spicer reads the childrens' book 'How To Catch The Easter Bunny' during the 139th Easter Egg Roll on the South Lawn of the White House April 17, 2017 in Washington, DC. The White House said 21,000 people are expected to attend the annual tradition of rolling colored eggs down the White House lawn that was started by President Rutherford B. Hayes in 1878. (Photo by Chip Somodevilla/Getty Images) ▲ WASHINGTON, DC - APRIL 17: White House Press Secretary Sean Spicer reads the childrens' book 'How To Catch The Easter Bunny' during the 139th Easter Egg Roll on the South Lawn of the White House April 17, 2017 in Washington, DC. The White House said 21,000 people are expected to attend the annual tradition of rolling colored eggs down the White House lawn that was started by President Rutherford B. Hayes in 1878. (Photo by Chip Somodevilla/Getty Images) ▲ WASHINGTON, DC - APRIL 17: Children pose for photographs with one of the costumed Easter Bunny characters during the 139th Easter Egg Roll on the South Lawn of the White House April 17, 2017 in Washington, DC. The White House said 21,000 people are expected to attend the annual tradition of rolling colored eggs down the White House lawn that was started by President Rutherford B. Hayes in 1878. (Photo by Chip Somodevilla/Getty Images) ▲ U.S. President Donald Trump salutes a member of the military (not seen in photo) who had just sung the U.S. national anthem as he stands with first lady Melania Trump (L) and a performer in an Easter Bunny costume at the White House Easter Egg Roll on the Truman Balcony of the White House in Washington, U.S., April 17, 2017. REUTERS/Joshua Roberts ▲ U.S. President Donald Trump stands with his son Barron (L-R), first lady Melania Trump and a performer in an Easter Bunny costume on the Truman Balcony during the White House Easter Egg Roll in Washington, U.S., April 17, 2017. REUTERS/Joshua Roberts ▲ U.S. President Donald Trump, U.S. first lady Melania Trump and the their son Barron stand during the National Anthem at the 139th annual White House Easter Egg Roll on the South Lawn of the White House in Washington, U.S., April 17, 2017. REUTERS/Joshua Roberts ▲ (L-R) US First Lady Melania Trump, Barron Trump and US President Donald Trump walk to the Easter Egg Roll on the South Lawn of the White House April 17, 2017 in Washington, DC. / AFP PHOTO / Brendan Smialowski (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images) ▲ WASHINGTON, DC - APRIL 17: A youngster wears a 'Make America Great Again' hat with bunny ears during the 139th Easter Egg Roll on the South Lawn of the White House April 17, 2017 in Washington, DC. The White House said 21,000 people are expected to attend the annual tradition of rolling colored eggs down the White House lawn that was started by President Rutherford B. Hayes in 1878. (Photo by Chip Somodevilla/Getty Images) ▲ US First Lady Melania Trump walks to the Easter Egg Roll on the South Lawn of the White House April 17, 2017 in Washington, DC. / AFP PHOTO / Brendan Smialowski (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images) ▲ First Lady Melania Trump arrives to read a book during the 139th White House Easter Egg Roll on the South Lawn of the White House in Washington, DC, April 17, 2017. / AFP PHOTO / SAUL LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images) ▲ WASHINGTON, DC - APRIL 17: U.S. first lady Melania Trump waves before reading to children from the book 'Party Animals' during the 139th Easter Egg Roll on the South Lawn of the White House April 17, 2017 in Washington, DC. The White House said 21,000 people were expected to attend the annual tradition of rolling colored eggs down the White House lawn that was started by President Rutherford B. Hayes in 1878. (Photo by Win McNamee/Getty Images) ▲ WASHINGTON, DC - APRIL 17: Costumed characters await visitors during the 139th Easter Egg Roll on the South Lawn of the White House April 17, 2017 in Washington, DC. The White House said 21,000 people are expected to attend the annual tradition of rolling colored eggs down the White House lawn that was started by President Rutherford B. Hayes in 1878. (Photo by Chip Somodevilla/Getty Images) ▲ U.S. President Donald Trump blows a whistle to start the White House Easter Egg Roll alongside first lady Melania Trump and his son Barron (R) on the South Lawn of the White House in Washington, U.S., April 17, 2017. REUTERS/Joshua Roberts ▲ U.S. President Donald Trump talks to attendees at the start of the White House Easter Egg Roll on the South Lawn of the White House in Washington, U.S., April 17, 2017. REUTERS/Joshua Roberts ▲ Daphne Rank, from Dillsburg, Pennsylvania, participates in an Easter egg roll race during the 139th White House Easter Egg Roll on the South Lawn of the White House in Washington, DC, April 17, 2017. / AFP PHOTO / SAUL LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images) ▲ US President Donald Trump shows a note he wrote while writing to service members with children during the Easter Egg Roll on the South Lawn of the White House April 17, 2017 in Washington, DC. / AFP PHOTO / Brendan Smialowski (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images) ▲ WASHINGTON, DC - APRIL 17: White House Counselor to the President Kellyanne Conway poses for a selfie with a supporter during the 139th Easter Egg Roll on the South Lawn of the White House April 17, 2017 in Washington, DC. The White House said 21,000 people are expected to attend the annual tradition of rolling colored eggs down the White House lawn that was started by President Rutherford B. Hayes in 1878. (Photo by Chip Somodevilla/Getty Images) ▲ WASHINGTON, DC - APRIL 17: White House Counselor to the President Kellyanne Conway and her family arrive for the 139th Easter Egg Roll on the South Lawn of the White House April 17, 2017 in Washington, DC. The White House said 21,000 people are expected to attend the annual tradition of rolling colored eggs down the White House lawn that was started by President Rutherford B. Hayes in 1878. (Photo by Chip Somodevilla/Getty Images) ▲ Katie Zoromski, 10, of Boothwin, Pennsylvania, participates in an Easter egg roll race during the 139th White House Easter Egg Roll on the South Lawn of the White House in Washington, DC, April 17, 2017. / AFP PHOTO / SAUL LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images) ▲ Kids participate in an Easter egg roll race during the 139th White House Easter Egg Roll on the South Lawn of the White House in Washington, DC, April 17, 2017. / AFP PHOTO / SAUL LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images) ▲ WASHINGTON, DC - APRIL 17: Costumed characters, including the Teenage Mutant Ninja Turtles, the Cat in the Hat and the Very Hungry Caterpillar, participate in the 139th Easter Egg Roll on the South Lawn of the White House April 17, 2017 in Washington, DC. The White House said 21,000 people are expected to attend the annual tradition of rolling colored eggs down the White House lawn that was started by President Rutherford B. Hayes in 1878. (Photo by Chip Somodevilla/Getty Images) ▲ WASHINGTON, DC - APRIL 17: NBC's Al Roker is joined by the Washington National's Racing Presidents during the 139th Easter Egg Roll on the South Lawn of the White House April 17, 2017 in Washington, DC. The White House said 21,000 people are expected to attend the annual tradition of rolling colored eggs down the White House lawn that was started by President Rutherford B. Hayes in 1878. (Photo by Chip Somodevilla/Getty Images) ▲ WASHINGTON, DC - APRIL 17: Sisters (L-R) Emersyn, Gwenyth and Peytin Burningham of Salt Lake City, UT, roll colored eggs down the White House South Lawn during the 139th Easter Egg Roll April 17, 2017 in Washington, DC. The White House said 21,000 people are expected to attend the annual tradition of rolling colored eggs down the White House lawn that was started by President Rutherford B. Hayes in 1878. (Photo by Chip Somodevilla/Getty Images) ▲

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