Crowd-control weapons are any weapons or devices used to control or disperse a crowd of people. They can include anything from tear gas and rubber bullets to water cannons and sound cannons. While some crowd-control weapons are considered less harmful than others, all of them can cause serious injury or even death.

Tear gas is a chemical agent that causes intense burning and irritation of the eyes, nose, throat, and lungs. It can also cause coughing, vomiting, and diarrhea. In some cases, tear gas can even be fatal.

Rubber bullets are projectiles made of hard rubber or plastic that are used to disperse crowds. While rubber bullets are less likely to cause serious injury or death than live ammunition, they can still cause serious injuries, such as bruises, cuts, and broken bones.

Water cannons are used to spray high-pressure streams of water at crowds of people. While water cannons are not typically considered dangerous, they can cause injuries if the water pressure is too high. In some cases, water cannons have even been used to knock people over or sweep them away.

Sound cannons emit high-pitched sounds that can cause pain and disorientation. While sound cannons are not typically considered dangerous, they can cause hearing damage or other injuries if they are used at too high a volume.

In conclusion, crowd-control weapons can be very dangerous. While some crowd-control weapons are considered less harmful than others, all of them can cause serious injury or even death. It is important to use caution when using crowd-control weapons and to weigh the risks and benefits before deploying them.