As 2013 gets underway, progressives need to be here now. We’re in a new era of national politics - with different circumstances that call for a major shift in approach.

Last year, the vast majority of progressives supported the Obama campaign to keep a Republican out of the White House. We helped deliver that vital blow to right-wing forces.

But now, President Obama is no longer the alternative to prevent a GOP takeover of the presidency. He goes into his last term as the leader exerting immense leverage that continues to move the Democratic Party - and the frame of political debate - in a rightward and corporate direction.

That’s a predictable result when Democratic leadership makes cutting Social Security doable, puts a bull’s-eye on Medicare, protects the military from major cuts, takes a dive on climate change, reinforces perpetual war in sync with “kill lists” for routine drone attacks across continents, throws habeas corpus and other civil liberties under the bus and promotes far-reaching austerity measures.

With the threat of a President Romney gone and the continuing scarcity of a progressive moral core in the Oval Office, millions of progressives who understood the tactical wisdom of supporting Obama’s re-election should now recognize that the time has come to renounce his leadership.

That leadership has become so corrosive that the House Democratic leader, Nancy Pelosi, last month declared a cut in Social Security’s cost-of-living allowance would “strengthen” Social Security. This is typical of the doublespeak that continues to accompany a downward spiral -- underscoring the great need for progressive insurgencies against what the Obama administration has become.

To build progressive strength, as a practical matter, sooner is much better than later. With the president in his final term, why wait years to challenge the rightward momentum coming from the top of the Democratic Party? There is no better time to proceed with that challenge than right now.

As part of the process, we’ll need to build genuine progressive leadership from the grassroots. An astute motto notes: when the people lead, the leaders will follow.

For those who contend that grassroots action cannot dramatically shift the national discourse, one word of refutation should suffice: Occupy. Such insurgencies are possible - and can scale up with remarkable rapidity, as the Occupy movement showed in late 2011.

But denunciations and protests, while vital, are insufficient. We need stronger progressive institutions imbued with clarity and greater capacity to organize from the base to make the most of this new era - without illusions or counterproductive fixations on Obama as an individual.

Vilifying or lionizing Obama often personalizes politics as “pro” or “anti” Obama. But the useful point is not to personalize our opposition - quite the opposite. We need to politicize it, clearly based on a moral view of what politics should be and what so many administration policies are not. We’re fighting to overcome an entire corporatist system.

Ironically, on the left, Obama’s demonizers and apologists often fall into opposing sides of the same trap: fixating on Obama the person instead of concentrating on a sober political assessment of his presidential actions and inaction.

That governance is not compatible with a progressive agenda. Obama’s political dance steps with Republicans continue to move the country’s frame-of-reference further rightward. As the New York Times reports, the tax deal that President Obama pushed through Congress on Tuesday “would have been a Republican fiscal fantasy” just a few years ago - “a sweeping bill that locks in virtually all of the Bush-era tax cuts, exempts almost all estates from taxation, and enshrines the former president’s credo that dividends and capital gains should be taxed equally and gently.”

Obama has his hands firmly on the levers of national party power. That’s why so few Democrats - just three in the Senate and 16 in the House - dared to vote against the fiscal deal on New Year’s Day. But now there are real opportunities for insurgencies and challenges from the party base as well as other progressive constituencies, inside and outside the electoral arena.

Will we grasp those opportunities? If the answer is yes, it won’t come from the top echelons of the largest unions, environmental groups or liberal PACs. Whatever their virtues, such organizations have become too enmeshed as enablers of the Obama White House to contemplate helping to launch from-the-base challenges to the administration.

With the danger of a Republican replacing Obama in the White House now behind us, progressives must proceed to systematically confront the administration in the process of reframing the national discourse on economic fairness, Wall Street, civil liberties, war and climate change. The next generations are depending on us.

Norman Solomon is co-founder of RootsAction and founding director of the Institute for Public Accuracy.