Because instilling fear is the best proven way to get folks to give up their freedom.
From ~ 1889 to 2013 temperature has increased from ~288 K to 288.8K (0.3%) If this is true, to me it means that the temperature has been amazingly stable.
Is it possible that all the paved roads and cut down forests are the cause of “global warming”, not CO2?"
I am not sure it is instilling fear as much as amplifying stupidity.
“The entire aim of practical politics is to keep the populace alarmed and, hence, clamorous to be led, by an endless series of hobgoblins, most of them imaginary.”
-H.L. Mencken