YouTube puts context label on GOP presidential candidate Vivek Ramaswamy’s video: YouTube imposed a fact-checking label on presidential candidate Vivek Ramaswamy’s Feb. 23 video, “The Climate Change Movement Is An Illusion, With A More Devious Underpinning.” YouTube put a context label that linked to the United Nations and claimed, “Climate change refers to long-term shifts in temperatures and weather patterns, mainly caused by human activities, especially the burning of fossil fuels.” A 2022 study found that atmospheric CO2 from fossil fuels was too low to cause global warming.