Martin Luther King Jr. Day is observed on the third Monday during the month of January, falling around the date of King's birthday, January 15th. The holiday was signed into law by then President Ronald Reagan in 1983 and was officially observed in all 50 states in 2000. In honor of the upcoming holiday, we're celebrating the legacy of the iconic civil rights leader by sharing some of our favorite MLK-inspired tattoos, take a look at the breathtaking black-and-grey ink in the gallery below.