The protests were linked to concerns over personal freedoms and government overreach. Mainly related to COVID-19 mandates and stay at home recommendations.
Supporters saw the movement as a grassroots stand for liberty against government overreach.
*edit the freedom convoy organised 3 years ago in 2022 as pointed out by commenter’s.
Freedom convoy grew into something much bigger than Truckers protesting about vaccine mandates to cross the border. They had a point that they work in very isolated conditions, but covid freaks were opportunistic, and US/right wing funding to make it blow up was plenty.