It's difficult to believe that genocide can take place today. Tens or hundreds of thousands of men, women and children being systematically killed? Impossible. Someone would surely stop it before things escalated to that… wouldn't they?

Since 2003, rebels and government forces in the Darfur region of Sudan have killed hundreds of thousands, kidnapped, murdered, maimed, and raped citizens, poisoned wells, burned entire villages, and displaced more than 3 million people.

Being a refugee does not mean you've escaped and are out of harm's way. Roughly 80% of deaths in Darfur have been among displaced people, most as a result of unsanitary living conditions.

The documentary, The Last Survivor examines the idea of genocide in the 21st century. It tells the story of survivors of four different genocides: the Holocaust, Darfur, Rwanda, and the Congo.

We've all heard the line:

"All that is necessary for the triumph of evil is that good men do nothing."

In each case of genocide, thousands died before anyone stepped in. The Last Survivor takes a look at how we face similar issues today.

In honor of World Refugee Day, make this the next movie you watch. It's been winning award after award at film festivals, but you can watch it online for free here.

Don't have time to watch today? Plan another night to watch with friends or family. There's plenty you can do right now. It takes less than a minute to sign this petition, urging Congress to support laws and actions that prevent genocide.

In 1994, more than 800,000 people were killed in Rwanda as the rest of the world stood by. President Clinton later said that he regretted not sending the 5,000 peacekeepers requested and lamented that that single action could have saved 500,000 lives.

After signing the petition, complete a short activity in support of one of the following organizations on SocialVibe, working to support peace and human rights around the world:

Invisible Children works to educate rescued child soldiers and stop the LRA. More about the LRA here.

The American Red Cross works around the world, providing medical supplies, skilled response workers, and financial assistance to communities in crisis.

The Censorship Research Center provides uncensored Internet access to oppressed people, while protecting their identities.

For more actions you can take right now, visit worldrefugeeday2011.com/take-action.