Rubuta ci gaba don wannan sakin layi - An ba da ladabi ga manufofinsa don hana mummunar tashin hankali a Philadelphia a lokacin rani na 1967, yayin da biranen da ke da irin wannan adadin Baƙin Amurkawa, kamar Detroit da Newark
, sun yi tasiri. A shekara mai zuwa, Chicago, Baltimore, da Washington, D.C. duk sun fuskanci rikice-rikice masu yawa a watan Afrilu 1968 bayan kisan gillar Martin Luther King, Jr., kuma wani bincike na zamani na Drew Pearson ya ba da bashi ga "daya daga cikin 'yan sanda mafi wuya a Amurka", Kwamishinan Frank Rizzo, da kuma' yan sanda "da suka hada kai" don hana irin wannan rikici a Philadelphia.