I'm not opposed to more active protest, but I don't think drivers in the Netherlands are a good target.

Considering the Netherlands is the poster child for how to run a transportation system on Not Just Bikes, I think they are barking up the wrong tree. In places like the US, blocking roads will just cause more emissions from all the idling vehicles. I live in the US and can say with confidence that it wouldn't change much.

US transportation reform is a whole other thing. It will take at least a decade to undo all of our car dependency even with a large effort. The best the we can immediately do in the US is encourage telework, 4 day work weeks or longer and fewer shifts, and peer pressure people into not driving canyoneros and monster trucks unless they frequently drive off road or on dirt roads.

As far as the Dutch fossil fuel usage goes, since Europe has usable rail system, maybe protest air travel?

My suggestion is go for the biggest and most immediate bang for buck so to speak. Beef production is one of the worst contributors and the easiest to change. It is also generally more expensive than other proteins. Maybe start slipping leaflets into the beef sections of stores showing the staggering difference in GHG emissions AND cost. It can have immediate results too! We can collectively eat less beef right now.