What people are doing already:

Marching

Rallying

Writing letters and emails

Making youtube videos

Making speeches

Using social media

and so much more

If you are joining a march or rally doesn’t mean you are not being a leader and encouraging others, following can be leading too. If a lot of people are doing something it will encourage others to do it and the more people the more others listen. So do not think that following is not helping and keep follow/leading!