The idea that if we move to curtail CO2 emissions, it will mean the collapse of industrial capitalism is far more alarmist than any realistic AGW scenario, so using the term "alarmist" to try and discredit people concerned about AGW is really, really stupid.
"Your plan is to pre-murder billions and billions of people. And it's not gonna turn out as tidy as you think. You can't even imagine how pear-shaped this is gonna go. Let me tell you the parable of Too Many Hitlers." #ShitTimeTravelersSay