Historically, rallying people and taking to the streets is a historic way to make a big impact.
The anti-Iraq war protest in 2003 was the single largest coordinated protest in history, with more than 10 million people participating in over 600 cities around the world.
While people's demands were not met, it inspired a generation of activists.
More recently, the Occupy Movement against social and economic inequality made waves around the world and drew in people from more than 950 cities.
While newer means of protesting, including online activism, are effective, there is a significant impact when thousands of people collect to take a stand.