A line of police pushes back protestors and their vehicles as they clear a blockade at the entrance to the Ambassador Bridge, that was sealing off the flow of commercial traffic over the bridge into Canada from Detroit, on February 12, 2022, in Windsor, Canada. As a convoy of truckers and supporters continues to occupy Ottawa's downtown, blockades and convoys have popped up around the country in support of the protest against Canada's COVID-19 vaccine mandate for cross-border truckers. (Photo by Cole Burston/Getty Images)