We decided to go with the topic of police misconduct. This is such a broad idea that we thought it best to narrow it down to something in specific such as racial profiling. According to the ACLU racial profiling :
"refers to the discriminatory practice by law enforcement officials of targeting individuals for suspicion of crime based on the individual's race, ethnicity, religion or national origin. Criminal profiling, generally, as practiced by police, is the reliance on a group of characteristics they believe to be associated with crime."
Inevitably our audience would include law enforcement or minorities. We went with law enforcement. For us targeting that audience makes more sense. It really helped define the decisions we made when it came to making our persona chart.