What are the black stickers on NFL helmets for?
EAGLE-eyed fans have spotted players sporting black stickers on their NFL helmets - and it's for a great reason.
This is one of the most exciting times of the year as teams are battling it out on the Super Wild Card.
And with a spot in the Super Bowl as the end goal, every side will certainly be giving it their all.
But among all the fancy NFL attire, fans have noticed that the players have now got a black sticker, stuck to their helmets.
What are the black stickers on NFL helmets for?
The NFL unveiled three new ways that the league will deepen its commitment to Dr. Martin Luther King Jr throughout the Wild Card Weekend.
And one of those ways is for players to have a "MLK" sticker, stuck on the back of their helmets.
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It was first introduced during Los Angeles Rams' 34-11 win against the Arizona Cardinals.
Who was Dr Martin Luther King Jr.?
Dr Martin Luther King Jr. was an iconic civil rights activist who believed in non-violent protest.
The Baptist minister was a key player in the American civil rights movement from the mid-1950s until his assassination in 1968.
He advocated peaceful protest and was the driving force behind both the Montgomery Bus Boycott and the 1963 March on Washington.
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The March helped bring about such landmark legislation as the Civil Rights Act and the Voting Rights Act.
And he was awarded the Nobel Peace Prize in 1964 and is honoured each year on Martin Luther King Jr Day, which has been a federal holiday in the USA since 1986.
The March on Washington culminated in King’s most famous address, known as the “I Have a Dream” speech.
It was a speech described as a spirited call for peace and equality, that many consider a masterpiece of rhetoric.
What has been said about the "MLK" sticker?
The NFL revealed that this will be a five-year commitment to help spread Dr Martin Luther King Jr's message to millions of young people.
NFL senior vice president of social and responsibility Anna Isaacson said: "The NFL's partnership with Realizing the Dream aligns with our dedication to serving communities, the values that underpin our Inspire Change efforts and our desire to further Dr. King's legacy.
"As we build upon an existing movement, we're excited to answer Realizing the Dream's call to action through facilitating and celebrating acts of service and social change around the country."