With a reason, though.
Sofa posted an idea on how to honor our civil rights icon - Honor MLK: Disobey Unjust Laws
Can you think of any unjust laws in the USA, your state, your county? How about your city? Don't forget your homeowners associations or historical districts.
Instead of a day of service, how about a day of civil disobedience?
I can't think of a better way to honor him.