Protesting by blocking roads

is simply going to annoy people - and possibly even put lives at risk.
I was due to have a "meeting" with someone yesterday. Several other people were as well. She was a key person for the meeting, the person with some vital information.
I logged in at the right time. So did other people. There was no J.... She is one of those people who might, occasionally, be a few minutes late. If she is it will be unavoidable. Her working life is busy.
And then, about ten minutes later, one of the other members of the group sent out a message, "Just had a call from J... she can't get to the office just yet."
When she eventually arrived she sent out an apology saying that the "climate protestors" had blocked her way. She had difficulty extricating herself out of the consequent traffic issues and had, rightly, made certain an ambulance had gone ahead of her a little later even when it meant waiting for another cycle of lights.
Her sympathy for the protestors was nil.  
    "If they want to do something about climate change then go and spend their spare time working for Trees for Life," she growled.
I couldn't agree more.
The problem is doing something like that would require a sustained effort. It wouldn't cause the same sort of publicity. It wouldn't get the adrenalin flowing in the way blocking the roads does. 
If the convoy which went to protest about the Adani coal mine had simply written letters it would have been just as effective. If they had saved the money they spent on petrol and other things and put it to planting trees it would have been more effective. If they had talked to local people in an informed and positive way it would have been even more effective.
Blocking roads is not the answer.