Living in Peace and Wisdom on our Planet

So if the EU has just put together an agreement to reduce emissions by 20% by 2020, why are the climate alarmist groups calling it "a dark day" and "an embarrassment"?

Well, the answer is because the actual agreement is for a 4% reduction (also explained in the last link, but Roger Pielke Jr does it better). And that may be null and void if a global agreement doesn't emerge at Copenhagen next year, which it probably won't.