Crowd control is the controlling of a crowd, to prevent the outbreak of disorder and prevention of possible riot. Examples are at soccer matches, when a sale of goods has attracted an excess of customers, refugee control, or mass decontamination and mass quarantine situations (disease outbreaks, bioterror attacks, etc.). It calls for gentler tactics than riot control,[1] crowd control barriers,[2] fences and decals painted on the ground can be used to direct a crowd. Keeping the crowd comfortable and relaxed is also essential, so things like awnings, cooling fans (in hot weather), andentertainment are sometimes used as well. For controlling riots anddemonstrations, see riot control.