It is at this time of year that I like to remind people that Dr. King was killed when he started advocating for economic justice. He was killed before the Poor People's Campaign was brought to fruition.
It's 43 years later, and we need that campaign more than ever. This quote from Dr. King is just as true now as it was then.
“We believe the highest patriotism demands the ending of the war and the opening of a bloodless war to final victory over racism and poverty”
(though I'd throw sexism, ableism, homophobia, etc, etc. into that last quote).