Climate change is foremost on the lips of many people not least those "protesters".
The thing is..... over millions of years the climate on Earth has fluctuated with extremes of heat or cold and that was long before Man walked the Earth.
At one time the Mid-West (USA) was covered by a sea so the Earth must have warmed and it had nothing to do with "emissions" caused by Man.
At another time, most of the Earth was covered in ice so what caused those two extremes?
Is the answer that big Yellow thing out there..... the Sun?
There's many theories as to why the ancient climate changed and now Man is being blamed for the speed of climate change but if all supposedly "harmful emissions" stopped right now, would it make a ha-porth of difference?
Is (or was in times past) the change caused by a difference in our orbit around the Sun? Does our distance from the Sun vary over time causing the Earth to warm or cool? If that's so, there's absolutely nothing we can do about it? Cause for thought?
It's life Jim, but not as WE know it.
Live long and prosper.