What do violence interrupters in Oakland do? We spoke with one to find out

Colombia has attempted to decrease murder and homicide rates by setting up curfews for teenagers, forcing bars to close earlier in the evening, and creating gun laws to prevent the carrying of weapons. As a result of this epidemiological, data-driven approach, along with other governmental factors, the homicide rate has decreased significantly in most of the cities in which it was implemented.

Millions of families of arrested individuals do not know what to do to help, how to obtain a lawyer, or what the process entails in the court system. Created by Albert Cobarrubius Justice Project, participatory defense is a type of community organizing that teaches and empowers people who face criminal charges. Individuals know how to work with attorneys in order to navigate the system and ultimately feel equipped to become drivers of their own change.

Tulsa Public Schools drew on expertise across many sectors and extensive neighborhood input to address the issue of thousands of empty seats in local schools. Through a community-focused process, they were able to mindfully close under-utilized schools and better maximize the community's resources for students.

New crowdfunding options can help even the smallest donor's contributions to have a meaningful impact, bolstering a sense of personal involvement, maximizing knowledge about causes, and inspiring greater participation.

Richmond, California ranked among the highest homicide rates in the country. The city created the Office of Neighborhood Safety to engage the community in the effort to curb gun violence and prevent homicides. ONS works directly with the young people who are at risk and have succeeded in reducing the homicide rate.

In India, 620 million people openly defecate outdoors, causing harm to hygiene, sanitation, food, and water resources. The president of India funded an initiative to build public toilets for the people in his country, but the people did not use them because of traditions and behaviors. The Total Sanitation Campaign is starting to change villagers’ minds by having local leadership persuade those who resist the toilets by holding community activities and creating special committees to maintain the sanitation.

Civic leaders in the U.S. struggle to effectively help their distressed neighborhoods. East Lake, Atlanta, created a replicable model that mixes residents of differing socio-economic status, and focuses on education and health in the area.

Global social and economic problems are difficult to change. However, fan-activism fuels the interests of fans of popular young adult fiction. Books such as Harry Potter and the Hunger Games have inspired activist groups that raise awareness of global hunger, reading, and relief supplies to impoverished nations, among others. Being a fan has served as a bridge to become politically active and solve the world’s problems.

A program in Philadelphia is pioneering new ways to treat the urban wounded. By seeing it as PTSD, and not pointing fingers, the city is using mental health tools to decrease violence and heal communities.

In Brooklyn's Crown Heights neighborhood, an organization called Save Our Streets Crown Heights (S.O.S.) is taking steps to disrupt violence. The organization is modeled after Chicago's violence interrupters, which employ people from the neighborhood to connect with those most at-risk and disrupt conflicts and retalitory violence.