It's probably not going to save the polar bears. It won't fix the past. It's not going to change the world (though nor will current proposals break the bank, let alone cost the earth). But it is irresponsible to keep sticking our heads in the sand.
There will be a rallies in Sydney, Melbourne, Perth, Hobart, Adelaide and Brisbane. These rallies will be family friendly and are not just for hard-core activists, but for anyone with a mother who taught you to clean up your own mess.