Two visual ads shown side by side. The one on the left shows a family in an airplane with the label "before carbon tax" and a girl playing with a toy plane with the label "after carbon tax." The one on the right shows several images of oil workers with the label "Oil and gas continues to fuel the Canadian economy."

The Investigative Journalism Foundation (IJF) analyzed social media advertising over the last year to see who is echoing Poilievre's "axe the tax" mantra. Apart from politicians and political parties, the biggest spender is an outfit most Canadians have never heard of.