▁by ▁revolution ary ▁means ". ▁ ▁By ▁means ▁of ▁anonymous ▁letters , ▁the ▁F BI ▁sow ed ▁dist rust ▁and ▁eventually ▁inst ig ated ▁a ▁split ▁between ▁the ▁Pan thers ▁and ▁the ▁R angers . ▁O ' Ne al ▁personally ▁inst ig ated ▁an ▁armed ▁cl ash ▁between ▁them ▁on ▁April ▁ 2 , ▁ 1 9 6 9 . ▁The ▁Pan thers ▁became ▁effectively ▁isolated ▁from ▁their ▁power ▁base ▁in ▁the ▁Chicago ▁gh etto , ▁so ▁the ▁F BI ▁worked ▁to ▁und erm ine ▁its ▁t ies ▁with ▁other ▁radical ▁organizations . ▁O ' Ne al ▁was ▁instruct ed ▁to ▁" create ▁a ▁r ift " ▁between ▁the ▁Party ▁and ▁SD S , ▁whose ▁Chicago ▁headquarters ▁was ▁blocks ▁from ▁the ▁Pan thers '. ▁The ▁Bureau ▁released ▁a ▁batch ▁of ▁rac ist ▁cart o ons ▁in ▁the ▁Pan thers ' ▁name , ▁aim ed ▁at ▁al ien ating ▁white ▁activ ists . ▁It ▁also ▁launched ▁a ▁dis information ▁program ▁to ▁forest all ▁formation ▁of ▁the ▁Rain bow ▁Co al ition , ▁but ▁the ▁B PP ▁did ▁make ▁an ▁al liance ▁with ▁the ▁Young ▁Patri ots ▁and ▁Young ▁L ords . ▁In ▁repeated ▁direct ives , ▁Ho over ▁demanded ▁that ▁CO IN TE L PRO ▁personnel ▁investigate ▁the ▁Rain bow ▁Co al ition , ▁" destroy ▁what ▁the ▁[ B PP ] ▁stands ▁for ", ▁and ▁" er ad icate ▁its ▁' serve ▁the ▁people ' ▁programs ". ▁ ▁Document s ▁Senate ▁investig ators ▁secured ▁in ▁the ▁early ▁ 1 9 7 0 s