▁sport ing ▁event ▁( s ports ▁ri ot , ▁football ▁h ool igan ism ) ▁or ▁fr ustration ▁with ▁legal ▁channels ▁through ▁which ▁to ▁air ▁gr iev ances . ▁ ▁While ▁individuals ▁may ▁attempt ▁to ▁lead ▁or ▁control ▁a ▁ri ot , ▁ri ots ▁typically ▁consist ▁of ▁dis organ ized ▁groups ▁that ▁are ▁frequently ▁" cha otic ▁and ▁exhib it ▁her d ▁behavior ." ▁There ▁is ▁a ▁growing ▁body ▁of ▁evidence ▁to ▁suggest ▁that ▁ri ots ▁are ▁not ▁ir r ational , ▁her d - like ▁behavior , ▁but ▁actually ▁follow ▁invert ed ▁social ▁norm s . ▁ ▁De aling ▁with ▁ri ots ▁is ▁often ▁a ▁difficult ▁task ▁for ▁police ▁forces . ▁They ▁may ▁use ▁te ar ▁gas ▁or ▁CS ▁gas ▁to ▁control ▁ri ot ers . ▁Ri ot ▁police ▁may ▁use ▁less - than - le th al ▁methods ▁of ▁control , ▁such ▁as ▁shot g uns ▁that ▁fire ▁flexible ▁b aton ▁r ounds ▁to ▁inj ure ▁or ▁otherwise ▁in cap ac itate ▁ri ot ers ▁for ▁easier ▁arrest . ▁ ▁Classification ▁ ▁Food ▁and ▁bread ▁ri ots ▁are ▁caused ▁by ▁har vest ▁fail ures , ▁in comp et ent ▁food ▁storage , ▁ho arding , ▁poison ing ▁of ▁food , ▁or ▁attacks ▁by ▁p ests ▁like ▁loc ust s . ▁When ▁the ▁public ▁becomes ▁des perate ▁from ▁such ▁conditions , ▁groups ▁may ▁attack ▁sh ops , ▁far ms , ▁homes , ▁or ▁government ▁buildings ▁to ▁obtain ▁bread ▁or ▁other ▁st ap le ▁food s ▁like ▁gra in ▁or ▁salt . ▁T