When the establishment can't, or refuses, to understand the difference between plant food and pollution ordinary folk have a big problem. Despite the fear that CO2 generates, it is plant food that all of life depends upon.
The main issue has been the promotion that certain molecules of CO2 emitted by modern industrial society can wreak havoc upon the Earth's weather and climate. Part of the problem is that there has been no evidence that variations in CO2 cause climate change. The Vostok ice core from Antarctica covers some 400,000 years, and the observation is that there is no causation. If anything, the record shows that warming leads CO2.