Riot shields are large, rigid pieces of equipment used by law enforcement officers and other security personnel during riots or protests. They are typically made of a durable material such as polycarbonate plastic or metal, and have a large, flat surface on one side with handles on either end. The purpose of these shields is to protect the user from projectiles, such as rocks, bottles, or other objects that may be thrown by rioters. They can also be used to push back crowds or create space between officers and unruly individuals. Overall, riot shields are an important tool in maintaining order during chaotic situations.