In the case of concern over public safety related to demonstrations in a major American city, the President might take the following actions:
1. **Impose a curfew:** The President can impose a curfew to restrict the movement of people during specific hours to maintain order and safety during demonstrations.
2. **Deploy federal troops to the city:** If the situation escalates and local authorities are unable to handle the unrest, the President can deploy federal troops to the city to assist in restoring peace and protecting public safety.
These actions are within the President's authority under certain circumstances to ensure public safety and order during demonstrations. Each action has specific implications and legal considerations that must be taken into account when making such decisions.
