Thousands of protesters gathered in New York City’s Union Square on Wednesday evening (3/21/12) for the Million Hoodie March to demand justice and search for answers in the death of 17-year-old Florida teen Trayvon Martin.

Martin (pictured below, left) was shot in the chest and killed in Sanford, Florida on February 26 because he looked “suspicious” to his alleged killer. It turns out that Martin was on his way to a family member’s home. After the murder Martin’s body was tested for drugs and put through a thorough background check. The results yielded only a bag of Skittles and an Arizona iced tea. Meanwhile George Zimmerman (pictured below, right), the man who admits shooting Martin, did not undergo any such scrutiny.

In the 26 days since the incident a fuller picture is emerging about Zimmerman. Zimmerman is reported to have told police that he shot Martin in “self-defense.” Apparently Zimmerman felt he needed to use deadly force against the unarmed Martin is because the teen was black -- on the recording of Zimmerman's call to 911 (which he made before pursuing the teen), he is heard using what sounds like a racial epithet and saying "he’s a black male…Something’s wrong with him…These a**holes, they always get away.” What’s more, investigators missed a possible racist remark by Zimmerman as he spoke to police dispatchers just before the killing. To date, Zimmerman has not been charged or arrested in Martin’s shooting.

The failure to charge Zimmerman with any criminal wrongdoing has outraged members of the press as well as the general public. For instance, MSNBC’s Al Sharpton and Lawrence O’Donnell are covering the case extensively and are demanding an investigation into the Sanford Police Department. The Sanford City Commission passed a motion of "no confidence" in its police chief at a meeting on Wednesday after the investigation into Martin’s death. Rep. Frederica Wilson (D-Fla.) called for justice by taking to the House floor with an impassioned plea.

Spurred to action by the media and government representatives, activist Daniel Maree took to organizing Wednesday’s Million Hoodie March and spreading the word about the petition, “Prosecute the Killer of Our Son, 17-year-old Trayvon Martin,” signed by one million people to demand justice for Martin.

The March began with a rally at Union Square where Martin’s parents reminded the crowd that their “son was not committing any crimes. Our son is your son ... It's not about [a] black-and-white thing; it's just about a right-and-wrong thing." Using tactics developed through Occupy Wall Street protests to overcome New York City’s new ban on megaphones, the crowd responded using the human microphone. The crowd chanted “no justice, no peace, no racist police.” And with that the diverse groups of protestors grabbed their bags of Skittles, Arizona iced teas and began the Million Hoodie March going south -- in the direction of Florida -- on the streets of Manhattan.

Broadcast by independent journalist Tim Pool, it was plain to see that the March itself was rather peaceful, though there were a few confrontations and arrests.

Tweets reported that the New York Police Department cleared Union Square due to an alleged terrorist alert.

RT @OccupyWallStNYC: #NYPD claims a package has been found at #UnionSq - cleared everybody including passengers. Terrorism card on #ows?

— Latino Rebels (@latinorebels) March 22, 2012

Despite this interference the leaderless march continued. And because it was leaderless, the march was very difficult for NYPD to control. The three crowds diverged and converged several times and there were moments of running, jumping and evading. Some protestors tore down the barricades surrounding the bull sculpture on Wall Street and climbed on it. But most of the crowd was walking through the fog and talking about how Trayvon Martin’s case is linked to institutional racism. And about how many are seeing the March as “Troy Davis 2.0,” as well as reminders of the tragic cases of Oscar Grant and Wendell Allen. Sometimes protesters shouted at the police and other times they chanted, “Stop stop and frisk!” Or, “whose streets? Our Streets!” Or, “Whose son? Our Son!”

Meanwhile, Twitter exploded with poignant descriptions, opinions and photos. One of the most popular photos circulated was of former Michigan Gov. Jennifer Granholm sporting a black hoodie in support.

Another popular image was of a group of Howard University Law School students donning hoodies with the caption “do they look suspicious to you?”

And the most compelling photo was of a young black boy holding a sign that read, “Am I next?”

Two of the most popular opinions were “No Apologies” and “White People, You Will Never Look Suspicious!” Each calling for every civilian, police officer, and elected official to take responsibility for a society that allows tragic events like Martin’s shooting to occur, though in very different ways. For some, it's about getting our nation to acknowledge that black men like Martin are uniquely and disproportionately targeted by law enforcement representatives. For others, it's about complicating the conversation by emphasizing that Zimmerman's mixed heritage did not make him immune to racism. Soon after online graffiti and rap created for the March began to emerge and circulate to bring the points home.

In all, the Million Hoodie March was an on the ground call for end and an online call for a new beginning. Protestors marched for an end to institutional racism and an end to injustice in this case and others.

Their footsteps were echoed by the digital footprints of online protestors who typed and tweeted for a fresh start and a future in which no one will have to worry about being the next Trayvon Martin.

NOTE: In the wake of the Million Hoodie March President Obama made the following comment on Friday, March 23: "My main message is to the parents of Trayvon Martin: If I had a son, he'd look like Trayvon," Obama said. "I think they are right to expect that all of us as Americans are going to take this with the seriousness it deserves, and we're going to get to the bottom of what happened."