On The 21st: Millions of Medicaid patients in Illinois lack access to affordable dental care, and this week, volunteers from across the state are stepping up to help. Also, two events in Illinois started today to honor police officers who died in line of duty. Plus, can social media be used to predict voting outcomes?

On the next 21st: We heard how Illinois residents are reacting to the shootings that have taken place this week. We also spoke with the author of a new book about the Zika virus.