The unwavering commitment of single individuals sometimes results in unpredictable mobilization, and can lead to perception shifts and changes in collective behaviour. Greta Thunberg's solitary "strike for climate" has soon developed into a global protest joined by millions of people.

In some countries there may be still just a few individuals who protest or strike: their dedication is inspirational and it contributes to making a difference.

What counts is not the enormity of the task, but the size of the courage. — Matthieu Ricard