Kuyambira kumapeto kwa zaka za m'ma 1990, ophunzira osachepera 50 aku koleji ku Midwest ku United States amwalira ndi "kumira mwangozi." Onse omwe akhudzidwa ndi amuna ndipo ambiri anali ophunzira othamanga omwe ali ndi GPA yayikulu. Ofufuza awiri opuma pantchito ku New York City amakhulupirira kuti aliyense adampatsa mankhwala osokoneza bongo ndikuponyedwa m'madzi osiyanasiyana kuti ziwoneke ngati ngozi kapena kudzipha. Kufanananso kwina kwa milanduyi ndi kupezeka kwa nkhope yakumwetulira pamitengo kapena pamalo omwe ali pafupi ndi zochitika zaumbanda, zomwe zachitika milandu yosachepera 12.
Chiphunzitso cha Smiley Face Murder
Achinyamata, azaka zakukoleji omwe amadyerera mowa mwina ali m'gulu la anthu osasamala padziko lapansi. Koma ofufuza opuma pantchito ku New York City a Kevin Gannon ndi a Anthony Duarte, komanso pulofesa wazamalamulo, Dr. Lee Gilbertson, akukhulupirira kuti pangakhale zochulukirapo kuposa kusamvera kwa achinyamata pazomwe "zimira" zomwe zachitika ku America konse.
Ofufuzawo akuti anyamata angapo omwe adapezeka atafa m'matupi am'madera akumadzulo kwa America kuyambira kumapeto kwa zaka za m'ma 1990 mpaka ma 2010 sanamire mwangozi, monga omaliza milandu, koma adazunzidwa ndi wakupha wamba kapena gulu la opha anzawo .
Ofufuzawo akunena za kukhalapo kwa zojambula zachilendo za "smiley nkhope" zomwe zimapezeka pafupi ndi matupi nthawi zambiri. Zojambulazo zitha kuwonetsa ntchito ya wakupha wamba. Zapezeka kawirikawiri, amunawo akuti, sizotheka kuti munthu m'modzi atha kupha yekha.
Matupiwa apezeka ku Minnesota, Iowa, New York, ndi mayiko ena asanu ndi atatu. Anthu asanu ndi anayi mwa omwe adazunzidwa anali atapita ku Yunivesite ya LaCrosse ku Wisconsin, zomwe zidangochitika mwamwayi, kunena zochepa. A Duarte ndi a Gannon amati matupiwo amapezeka m'madzi kuti azitsanzira kumira komanso chifukwa madziwo nthawi zambiri amawononga umboni ngati zala zazingwe ndi zotengera.
Malinga ndi Gannon, "Ndikukhulupirira kuti anyamatawa agwidwa ndi anthu ena m'malo omwera mowa, kuwatulutsa, kuwagwira nthawi yayitali asanalowe m'madzi." Ananenanso kuti nkhope zomwetulira ndizonyoza akuluakulu, nati, “Akukuwuzani pano kuti alowa muzoipa, ali okondwa kwambiri monga momwe amapha anthu ambiri. Amakhutira ndi ntchito yawo komanso zomwe akuchita komanso chifukwa cholepheretsa apolisi. ”
Zochita Za Ofufuza Zoyendetsa Malamulo Ndi Akatswiri
Mabungwe ambiri okakamiza, kuphatikizapo FBI, sakukhulupirira kuti pali chiwembu chilichonse pantchitozi, pomwe ena akuti a Duarte ndi a Gannon atha kukhala ndi zolinga zoyipa zopititsa patsogolo chiphunzitsochi poyamba.
Chiwerengero Cha Omwe Akumwetulira Kumaso Chitha Kukhala Chodabwitsa
Malinga ndi ofufuza Kevin Gannon ndi gulu lake la ofufuza, ali ndi umboni kuti amuna 100 atha kuphedwa ndi gulu la anthu akumwetulira. Imfayi idayamba mu 1997 ndipo onse amafanana modabwitsa koma sanawoneke ngati ofanana m'mbuyomu. Amuna ambiri anali achichepere, othamanga komanso ochita bwino pamaphunziro. Gannon adalemba kafukufuku wamutu pamutuwu wotchedwa "Case Study in Drowning Forensics."
Omwe Akumwetulira Kumaso
M'malo mwake, nkhope yakumwetulira ndi chizindikiro chosangalatsa chosonyeza chisangalalo ndi chisangalalo, chomwe chimagwiritsidwa ntchito kulikonse - kuyambira kulumikizana kwa uthenga mpaka makalata mpaka kukongoletsa khoma - m'moyo wathu watsiku ndi tsiku. Koma chizindikiro ichi chitha kukhala chowopsa ngati gehena chikamagwiritsidwa ntchito kuwonetsa chisangalalo cha munthu woyipa, woipa. Mwachitsanzo, wakupha waku Canada-America, Keith Hunter Jesperson, yemwe adapha azimayi osachepera asanu ndi atatu ku United States koyambirira kwa zaka za m'ma 1990, adagwiritsa ntchito chizindikiro chomwetulira m'makalata ake kwa apolisi ndi otsutsa.
Kupatula izi, Robert Lee Yates Jr. ndi wakupha wina waku America waku Spokane, Washington, yemwe adapha azimayi osachepera 11 ku Spokane pakati pa 1975 ndi 1998. Yates adagwiritsa ntchito matumba apulasitiki okhala ndi nkhope yosekerera yosindikizidwa kuti aphimbe mitu ya omwe adamuzunza. .
