Thousands of climate protesters march in Walk Against Warming in Brisbane CBD | Courier Mail

Last year's event attracted 10,000 participants, double the size of the 2008 event.

Walk Against Warming Brisbane 2010 attracts 3000 supporters

Actor Jack Thompson, who demanded action on climate change for the sake of future generations, estimated that 3000 people took part in today's event, but organisers said the figure was more like 8000.

Catchcries included "What do we want, renewable energy; when do we want it, now,’’ and the strongly worded ‘‘No coal, no oil, we don’t want our world to boil".