Le'Veon Bell just compared NFL free agency to the civil rights movement -- using Martin Luther King's most famous quote to celebrate becoming "free at last."
Hours after Pittsburgh Steelers general manager Kevin Colbert announced the team would not use a franchise or transition tag to force Bell to stay with the team, the disgruntled running back spoke out on Twitter.
"Free at last, Free at last, Thank God Almighty I am free at last."
Of course, the quote comes from MLK's legendary 1963 "I Have a Dream Speech" -- in which he imagines a future of racial equality.