o cide ▁of ▁Roman is ▁during ▁the ▁Hol oca ust . ▁Because ▁the ▁Roman i ▁communities ▁in ▁Central ▁and ▁Eastern ▁Europe ▁were ▁less ▁organized ▁than ▁the ▁Jewish ▁communities ▁and ▁the ▁Einsatz gru ppen , ▁mobile ▁killing ▁squad s , ▁who ▁travel led ▁from ▁village ▁to ▁village ▁mass ac ring ▁the ▁Roman i ▁inhabitants ▁where ▁they ▁lived ▁typically ▁left ▁few ▁to ▁no ▁records ▁of ▁the ▁number ▁of ▁Roma ▁killed ▁in ▁this ▁way , ▁although ▁in ▁a ▁few ▁cases , ▁significant ▁document ary ▁evidence ▁of ▁mass ▁murder ▁was ▁generated . ▁it ▁is ▁more ▁difficult ▁to ▁assess ▁the ▁actual ▁number ▁of ▁vict ims . ▁Histor ians ▁estimate ▁that ▁between ▁ 2 2 0 , 0 0 0 ▁and ▁ 5 0 0 , 0 0 0 ▁Roman i ▁were ▁killed ▁by ▁the ▁Germ ans ▁and ▁their ▁collabor ators — 2 5 % ▁to ▁over ▁ 5 0 % ▁of ▁the ▁slightly ▁fewer ▁than ▁ 1 ▁million ▁Roma ▁in ▁Europe ▁at ▁the ▁time . ▁A ▁more ▁thorough ▁research ▁by ▁Ian ▁Han cock ▁revealed ▁the ▁death ▁to ll ▁to ▁be ▁at ▁about ▁ 1 . 5 ▁million . ▁ ▁Naz i ▁ra cial ▁ide ology ▁put ▁Roman i , ▁Jews , ▁S lav s ▁and ▁black s ▁at ▁the ▁bottom ▁of ▁the ▁ra cial ▁scale . ▁The ▁German ▁N ure m berg ▁La ws ▁of ▁ 1 9 3 5 ▁stri pped ▁Jews ▁of ▁citizens hip , ▁conf isc ated ▁property ▁and ▁criminal ized ▁sexual ▁relationship ▁and ▁marriage ▁with ▁A ry ans . ▁These ▁laws ▁were ▁extended ▁to