This commentary was originally published by The Progressive.

It is nothing short of tragic that the fiftieth anniversary of the assassination of Dr. Martin Luther King Jr. on April 4 arrives during a presidential administration containing some of the most overtly racist individuals to hold positions of such political power in generations.

Most people learn only about King’s great accomplishments in the fight against racial segregation and Jim Crow laws in the South. Yet King also opposed the de facto segregation in housing and other manifestations of racism in the North, and was a passionate advocate for peace.

He challenged the draining of our national resources for the military. He opposed the Vietnam War and other aspects of U.S. foreign policy. He questioned an economic system that created enormous poverty amid great wealth. He was assassinated while organizing the Poor People’s March, in which he planned to lead thousands of poor Americans of all races to Washington, D.C., to demand economic justice.

In speaking out against the Vietnam War, King recognized that it was “the symptom of a far deeper malady within the American spirit.” He foresaw how, “we shall surely be dragged down the long, dark, and shameful corridors of time reserved for those who possess power without compassion, might without morality, and strength without sight.” He pegged the U.S. government as “the greatest purveyor of violence in the world today.”

King called for a “a radical revolution of values,” noting how “a nation that continues year after year to spend more money on military defense than on programs of social uplift is approaching spiritual death.” He warned, prophetically, of how the United States would be trapped in a series of overseas military entanglements while the gap between the rich and poor back home grew ever larger. He noted that the U.S. political and economic system was “on the side of the wealthy, and the secure, while we create a hell for the poor.”

King saw clearly the interrelatedness of war, poverty, and racism and recognized how taking on one required confronting the others. In a sense, King’s right-wing critics were more on target than many of his liberal supporters today: He was indeed a radical.

But King was never a communist, as he was often labeled. His commitment to democracy and deep religious faith made any adherence to the autocratic values of Marxism impossible. He was a democratic socialist who believed that meeting the needs of the poor was a higher priority than ensuring profit for the few. And even as he moved to the left later in his life, he never wavered on his firm commitment to nonviolence.

To King, nonviolence was actually more radical than violence, which simply perpetuated the oppression of one group against the other. He believed that nonviolence was both a tactic and a personal ethos. King, like Mohandas Gandhi, was a great moral leader and a brilliant political strategist. He recognized that nonviolence was strategically the only realistic option for oppressed African-Americans to achieve justice, and that violence would simply polarize the races and make true justice and reconciliation impossible.

Indeed, King recognized that structural violence could truly be overcome only through the bold and creative application of nonviolent action. He also recognized that it would be naive to put too much faith in the electoral process or the judiciary to bring justice, and that real change must come from below. In his words, it was no longer a question of violence versus nonviolence, but nonviolence versus non-existence.

And nonviolence, for King, was not passive, which is perhaps his most relevant message for today. He recognized that “Freedom is never given voluntarily by the oppressor. It must be demanded by the oppressed.”

Foreign Policy In Focus columnist Stephen Zunes is a professor of politics and coordinator of Middle Eastern Studies at the University of San Francisco.