The French government tried to spin a fuel tax as a carbon tax apparently. And protesters said it wasn't just about that tax.[3]
[1] https://ballotpedia.org/Washington_Carbon_Emission_Tax_and_S...
[2] https://ballotpedia.org/Washington_Initiative_1631,_Carbon_E...
[3] https://apnews.com/article/ap-top-news-riots-france-paris-in...
Side note: If we acknowledge that a realistic CO2 tax is democratically unpopular - excellent! Now we're making progress, that's a real piece of data to work with. It needs to happen, there's absolutely no way around it. If it doesn't currently fly in a democracy, we need to sweeten the deal. Trying to force it through by revolutionary means is an act of desperation, let's hope we don't even have to consider it. There's a hundred ways to make it more palatable. Let's start in that end!
Paying part of the CO2 tax back to individuals is one way of bribing the electorate to do what's necessary.