Two Elementary School students are stirring up controversy for exercising their First Amendment rights. Students from Mount View Elementary School were invited to sing the national anthem during April 1's Seattle Mariner's game.

While most of the students stood, two took a knee. Their bravery gained Colin Kaepernick's seal of approval on Twitter, with the still-unsigned number seven retweeting an image of the protest:

Here at Safeco Field where an elementary school sung the anthem and two students took a knee while performing. pic.twitter.com/HwHIsowsxN

— Ryan S. Clark (@ryan_s_clark) April 1, 2018

Kaepernick, of course, began the #TakeAKnee protest as a way of speaking out against police brutality during the 2016 NFL season.

Like Kaep, many others cheered the students for taking a stand on police brutality: 

Two young girls exercising their rights @SafecoField ✊ pic.twitter.com/jOOYxnHoSM

— Louis Penna (@louispenna) April 1, 2018

Shout Out to their parents for raising brave and fearless children. ????????????????

— Suaine Harris (@SuaineHarris) April 1, 2018

Kids are not unaware. They may in fact share the views of their parents but they went against status quo to make a statement. Good for them. It is encouraging to see kids finding their voice. It is a process we don’t all feel the same as adults but we learned to act when young

— Joni Jameson (@Jamesonjo) April 2, 2018

Others, however, criticized the children.

In an interview with Fox & Friends First, U.S. Army officer Jeremy Hunt was dismissive of the protest.

"Children are being taught a political agenda before they can even learn basic American history," Hunt said. He continued, "Patriotism must be safeguarded.”

In a statement to the Huffington Post, the school said the protest was an "individual act by the students. Obviously, the school district respects the First Amendment rights of our students.”