▁plans ▁for ▁police ▁depart ments ▁and ▁suggested ▁a ▁range ▁of ▁re forms . ▁Several ▁of ▁the ▁Commission ' s ▁find ings ▁related ▁to ▁the ▁poor ▁treatment ▁of ▁ju ven ile ▁off enders . ▁ ▁A ▁series ▁of ▁U . S . ▁Supreme ▁Court ▁dec isions ▁under ▁the ▁Warren ▁Court ▁led ▁to ▁important ▁changes ▁in ▁polic ing , ▁with ▁respect ▁to ▁civil ▁rights ▁and ▁constitution al ▁law . ▁M app ▁v . ▁Ohio ▁in ▁ 1 9 6 1 ▁and ▁Mir anda ▁v . ▁Arizona ▁in ▁ 1 9 6 6 ▁were ▁two ▁highly ▁influ ential ▁court ▁dec isions . ▁M app ▁v . ▁Ohio ▁found ▁that ▁evidence ▁obtained ▁in ▁viol ation ▁of ▁the ▁Four th ▁Am end ment ▁protection ▁against ▁" un reason able ▁searches ▁and ▁se iz ures " ▁may ▁not ▁be ▁used ▁in ▁criminal ▁pro sec utions . ▁Mir anda ▁v . ▁Arizona ▁required ▁that ▁criminal ▁suspect s ▁must ▁be ▁informed ▁of ▁their ▁right ▁to ▁consult ▁with ▁an ▁att orney ▁and ▁of ▁their ▁Fif th ▁Am end ment ▁right ▁against ▁self - inc rim ination ▁prior ▁to ▁question ing ▁by ▁police . ▁These ▁dec isions ▁began ▁to ▁set ▁national ▁standards ▁for ▁polic ing . ▁▁ 1 9 7 0 s ▁and ▁ 1 9 8 0 s ▁Special ▁comm issions , ▁such ▁as ▁the ▁Kn app ▁Commission ▁in ▁New ▁York ▁City ▁during ▁the ▁ 1 9 7 0 s , ▁have ▁been ▁used ▁to ▁bring ▁about ▁changes ▁in ▁law ▁enfor cement ▁ag encies . ▁Civil ian ▁review ▁bo ards ▁( per