A riot shield is a lightweight protection device, typically deployed by police and some military organizations, though also utilized by protestors. Riot shields are typically long enough to cover an average-sized person from the top of the head to the knees, though smaller one-handed models may also be used. They are generally intended to be used in riot control, to protect the user from melee attacks with blunt or edged weapons and also thrown projectiles, or non-lethal weapons such as rubber bullets and water cannons. They can also be used as short-ranged melee weapons to push back the opposing force. Most riot shields do not offer ballistic protection; ballistic shields are instead used in situations where heavily armed resistance is expected.