Answer: Police officers hitting unarmed protesters and Protesters yelling at the police and soldiers
Background of the Democratic National Convention
In the summer of 1968, when the Democratic Party held its national convention in Chicago, it became a scene of violence and police brutality.
The convention followed President Lyndon B. Johnson's announcement not to seek reelection. Other major preceding events were the assassinations of Rev. Martin Luther King Jr., Sen. Robert F. Kennedy, and the raging Vietnam War.