To make grassroots movements more effective and get more citizens involved, it is important to build strong, diverse, and inclusive coalitions, develop clear and compelling messages, and utilize various forms of media and technology to reach and engage a wide audience. It is also important to engage and empower marginalized communities, foster collaboration and cooperation with allied organizations, and provide opportunities for citizens to get involved in meaningful ways, such as through volunteer and leadership development programs.

If you want to learn more about grassroots movements, there are many books, publications, and documentaries available for someone who wants to learn more about grassroots movements in modern times in the USA. Here are a few suggestions:

Books:

• "The People's History of the United States" by Howard Zinn - This classic book provides a different perspective on US history, focusing on the experiences of ordinary people and grassroots movements.

• "This Changes Everything: Capitalism vs. The Climate" by Naomi Klein - This book examines the relationship between capitalism and climate change, and explores grassroots efforts to address the issue.

• "From #BlackLivesMatter to Black Liberation" by Keeanga-Yamahtta Taylor - This book explores the history and current state of the Black Lives Matter movement and its connections to broader struggles for racial justice.

• "No Is Not Enough: Resisting Trump's Shock Politics and Winning the World We Need" by Naomi Klein - This book examines the rise of Trump and the resistance movement that emerged in response, exploring grassroots efforts to challenge the status quo.

Publications:

• The Intercept - This online news outlet features investigative reporting and analysis on issues related to social justice, including grassroots movements.

• Jacobin - This socialist magazine offers in-depth analysis and commentary on politics, economics, and culture, with a focus on progressive and leftist perspectives.

• In These Times - This independent magazine covers a wide range of social and political issues, with a focus on labor, environmentalism, and social justice.

• Colorlines - This online magazine covers issues related to race and social justice, with a focus on communities of color.

• Democracy Now! - This daily news program provides in-depth coverage of social and political issues, with a focus on grassroots movements and marginalized communities.

Documentaries:

• "Whose Streets?" - This documentary follows the protests that erupted in Ferguson, Missouri, after the police killing of Michael Brown, and the grassroots movement that emerged in response.

• "The Black Panthers: Vanguard of the Revolution" - This documentary explores the history of the Black Panther Party and its impact on the civil rights movement.

• "The Interrupters" - This documentary follows a group of community activists in Chicago who work to prevent violence in their neighborhoods.

• "How to Survive a Plague" - This documentary tells the story of the AIDS crisis and the grassroots movement that emerged in response, focusing on the work of the activist group ACT UP.

There are also many organizations that have a history of empowering grassroots movements and could be good options for someone looking to join or support a group that is working to make a difference. Here are a few suggestions:

• The Sunrise Movement - This organization is focused on building a mass movement to address the climate crisis through grassroots organizing and advocacy.

• United We Dream - This organization is a youth-led network that is working to support and empower immigrant communities through grassroots organizing and advocacy.

• The National Domestic Workers Alliance - This organization is working to improve the rights and working conditions of domestic workers through grassroots organizing and advocacy.

• The Center for Community Change - This organization works to build the power of low-income people, people of color, and other marginalized groups through grassroots organizing and advocacy.

• The Movement for Black Lives - This coalition of organizations is working to advance the cause of Black liberation and support the Black Lives Matter movement.

• The Poor People's Campaign - This movement is working to unite poor and marginalized communities across the US to build power and demand a more just society.

• The Working Families Party - This political party is focused on building a multiracial, working-class movement to advance progressive policies and support grassroots candidates for office.

These are just a few examples of organizations that are doing important work to empower grassroots movements and make a difference in our society. There are many others out there as well, and it's worth doing some research to find a group that aligns with your values and interests.