This is a national event in Australia, the first of its kind I do believe. From the Love Earth Gathering website:
Why Love Earth?
Love Earth – because love is a verb. Love is something we must do. Love requires selflessness. And only a selfless society can adopt the changes needed to abate climate change. It requires selflessness to change your diet, to give up your car and to shop frugally. And if we all act in this way we will end climate change.
What is the Love Earth gathering?
Concerned citizens are calling on your help to save our planet from the impending catastrophes of climate change. We believe that the policy makers of our time are going to great lengths to avoid the one solution that is easy and affordable and will have a dramatic and powerful effect in reducing global warming.