The wheel of climate action turns slowly, but in Paris it has turned.

There’s much in this deal that frustrates and disappoints me, but it still puts the fossil fuel industry squarely on the wrong side of history.

Parts of this deal have been diluted and polluted by the people who despoil our planet, but it contains a new temperature limit of 1.5 degrees C.

That single number, and the new goal of net zero emissions by the second half of this century, will cause consternation in the boardrooms of coal companies and the palaces of oil-exporting states and that is a very good thing. The transition away from fossil fuels is inevitable.

Now comes our great task of this century. How do we meet this new goal? The measures outlined simply do not get us there. When it comes to forcing real, meaningful action, Paris fails to meet the moment.

We have a 1.5 degree wall to climb, but the ladder isn’t long enough. The emissions targets outlined in this agreement are simply not big enough to get us to where we need to be.

A deeply engrained injustice to be overcome

There is also not enough in this deal for the nations and people on the frontlines of climate change. It contains an inherent, ingrained injustice. The nations which caused this problem have promised too little to help the people on the frontlines of this crisis who are already losing their lives and livelihoods for problems they did not create.

This deal won’t dig us out the hole we’re in, but it makes the sides less steep. To pull us free of fossil fuels we are going to need to mobilise in ever greater numbers. This year the climate movement beat the Keystone XL tar sands pipeline, we kicked Shell out of the Arctic and put coal into terminal decline. We stand for a future powered by renewable energy, and it is a future we will win.

This is why our efforts have never been confined to these conference halls. Just as we’ve carried our messages of justice, equity, and environmental protection into the venues of the climate negotiations, and echoed the collective demand to speed the end of fossil fuels to the faces of our leaders, we will continue to raise our voices long after these talks are over.

We came to the COP with hope. Not a hope based on the commitments we wished our leaders would make, but a hope built on a movements that we have built together with many others. Together we are challenging the fossil fuel oligarchy, we are ushering in the era of solutions, and we are moving the political benchmark of what is possible.

Now we must escalate our fight for climate justice

While our political leaders walk, our movements run, and we must keep running.

From the High Arctic to Brazil, from the Alberta tar sands to Indonesia’s peatlands, from the Gulf of Mexico to the Mediterranean we will stand against those faceless corporations and regressive governments that would risk our childrens future.

We will push our beautifully simple solution to climate change – 100% renewable energy for all – and make sure it is heard and embraced. From schoolyards in Greece, to the streetlights of India, to small Arctic communities like Clyde River in Canada, we will showcase the clean, renewable solutions that are already here, and pressure our governments to make them available for everyone, fast.

Finally, we will stand with those communities on the front lines of this struggle. They are the leaders of this movement. They are the ones facing the rising seas, the superstorms, and the direct effects of our governments’ collective inaction. We will amplify their voices so the world is forced to hear our call for change.

In 2016 we – the entire climate movement – will escalate the fight. Together we will show the world that if our governments won’t act to stop the carbon bullies, then we will.

History is waiting in the wings, and we’re standing on the right side of it.

Kumi Naidoo is the international executive director of Greenpeace.

This article was originally published by Greenpeace.