Can social media be used as a tool by one individual to successful push change in society?

Social media is a very democratic platform. If you feel passionately about something you can disseminate your opinion via social media. Many people are skilled at this, and gain many friends and followers online who will "like" and "share" their views. In some cases social media influencers have become inspired to become politicians and use their media followers to vote for them in real life. Others use their influence to organise rallies in real life, or sign online petitions, or crowdfund to make change.