Czech president Vaclav Klaus spoke to a recent climate conference in NY about the threat to freedom from warmist hysteria:

A week ago, I gave a speech at an official gathering at the Prague Castle commemorating the 60th anniversary of the 1948 communist putsch in the former Czechoslovakia. One of the arguments of my speech there, quoted in all the leading newspapers in the country the next morning, went as follows: “Future dangers will not come from the same source. The ideology will be different. Its essence will, nevertheless, be identical – the attractive, pathetic, at first sight noble idea that transcends the individual in the name of the common good, and the enormous self-confidence on the side of its proponents about their right to sacrifice the man and his freedom in order to make this idea reality.” What I had in mind was, of course, environmentalism and its currently strongest version, climate alarmism...

Read his whole speech here:  'From Climate Alarmism to Climate Realism.'