The wheat is usually easy to separate from the chaff... The kind of activists I'm sympathetic to, they'll usually have structured demands, possibly figureheads or non-profits, that work out those demands and make information about it available to the public.
Then there are those bastard fronts, that have nor hand nor foot nor head on the shoulders. They will usually protest for something asininly unanimous, or just plain impossible such as:
-"Against holy warriors" (who was even for it in the first place raise your hand, might as well do a protest against bad weather)
-No matter how much milk we overproduce you need to guarantee a good price for it
The thing is if these are your concerns there are ways to achieve your goal without antagonising the public for nothing:
-Religious organisations that organise explicitly cross-religious events.
-Farmers over here stuck together, stopped selling their milk on the open markets, opened their own production chain, everybody now buys their milk, the people WANT to drink the milk from the cows they see looking out their windows, not some industrial farming product from far away. Unless you're like that poor that you rely on discounter ramen for nutrition, you buy their milk, everbody here understands the importance of it .
Now to our truckers: if they feel that persecuted by this "new world order" they wouldn't be holding their ugly faces into cameras, they'd be organising a black market like the french resistance, where people can shop and cough on eachother however they want. But they are thowing a temper tantrum, and in the act of doing so, are barely able to contain their larger political worldframe brushing off on the thing. If their cause was legitimate, which is it not, they'd still be doing it a disservice, it's not like anybody lacks awareness of the existence of the pandemic, or health mesures.
A good rule of thumb: if there material involved that is tens of tons heavy and tenthousands of dollars expensive, you are not looking at helpless individuals.