The document summarizes four case studies of social campaigns. Each case study includes the purpose, aims, techniques used, and impact of the campaign. The first campaign was Barack Obama's 2008 presidential campaign, which aimed to raise awareness and change voting behavior. Techniques included emphasizing "change" and using Obama's image. The impact was that Obama was elected president. The second campaign aimed to provide media access for people with disabilities. Techniques included African-inspired images and fonts to connect to the subject. The impact was gaining significant support. The third campaign aimed to address alcohol abuse by changing habits and attitudes. Techniques included an ambiguous image and harsh tone. The impact was a decline in alcohol consumption. The fourth campaign aimed to