Warning for Extinction protestors: Good advice for the Greens too

The warning from Mary Robinson to the Extinction Rebellion movement that they risk alienating the public if they do not employ smart tactics is appropriate. Despite that, it seems a challenge to modify a protest in a way that does not undermine its potency.
Blocking subway commuters may generate 15 seconds of fame but it alienates the very people the movement needs to convince to change their ways. Balancing those extremes is the second greatest challenge the green movement faces and it must walk that high wire carefully.