On the one hand this makes perfect sense, as global warming is an issue where being progressive and 'taking action' is the only way to solve the problem - being conservative and resisting change ('do nothing') is a recipe for disaster.
Unfortunately, the change being pushed by leftist parties is based on pseudo-scientific justification for their neo-communist, anti-western/capitalist policies. They use the raw 'per capita' emission data as an excuse to lay the blame for global warming entirely at the feet of developed countries, while the reality is that the root cause of the global warming crisis was (and is) global overpopulation. While one person using air conditioning and driving an SUV is bad for the environment, ten people doing so is ten times worse!
The ‘elephant in the room’ with regards to global warming causation is total carbon emissions, and this rise is mostly due to population growth (especially in third world countries), NOT due to the increase in carbon emissions per Capita per se:
As global warming is driven by the increase in atmospheric CO2 concentration (IE. Amount per cc of air), it is emissions per sq km that contribute to global warming impact, NOT emissions per capita. (Think about it – doubling the world’s population while keeping total CO2 emissions constant would NOT have any change on global warming, but would instantly reduce the emissions per capita. While doubling the world’s surface area while keeping the total CO2 emissions constant would halve the concentration of CO2 in the atmosphere – or, put a more realistic way, halving the amount of total CO2 emissions while keeping surface area constant would obviously halve the rate of CO2 increase). So, who are the big CO2 polluters in terms of actual impact (high CO2 emissions in relation to the country’s land area? – China, followed by Europe, then the USA, then India. A completely different picture than the ‘per capita’ argument pushed by Green Groups that totally ignore the biggest villain in the global warming crisis – China – for ideological reasons:
This shows the total fallacy, and ulterior motives, for Green groups pushing the usual ‘per capita’ propaganda:
By choosing to frame the global warming debate purely in terms of the scientifically invalid ‘per Capita’ measure (which they justify using a spurious notion of ‘fairness’ - make the rich pay), they can ‘prove’ that global warming is entirely due to the big, bad capitalist developed countries, and give the true source of the global warming crisis for the next fifty years – China and India - a free pass.
While this will undoubtedly achieve the Labor/Green goal of Robin Hood economics (steal from the rich and give to the poor), it is also a recipe for global climate disaster. The developed countries are going to spend a fortune on achieving heroic 'per Capita' emission reduction targets, while the developing countries and going to both a) not have to meet the same 'per Capita' targets, and b) also continue to stoke the engine driving climate change - unsustainable population growth.
In fifty years time my children will be suffering from the impacts of global warming, in world with a population having grown by around 50% above current levels - to around 10 billion. And I'm pretty sure the left-wing parties will still be blaming the problem on 'insufficient action' by developed countries, and not on the extra 2.5 billion people added to the global population in the interim.