The answer is C. Airplanes. All were used, but the other three were used as weapons.
Mayor Daley deployed thousands of police officers to restrain the protesters.
When the Democratic National Convention met in Chicago in 1968, thousands of protesters staged demonstrations against the US involvement in the Vietnam War. Chicago's mayor, Richard Daley, sent out 12,000 local police officers against the protesters and called in thousands more state and federal officers. The situation became a major riot between protesters and police that came to be known as "The Battle of Michigan Avenue."
Hope this helps!please give me brainliest
thought new industries should receive nation government protection
