. . "1964 - 1975" . . . . . . . . . . "Explaining the severity of the 1960's black rioting : a city level investigation of curvilinear and structural breaks hypotheses" . "Explaining the severity of the 1960's black rioting : a city level investigation of curvilinear and structural breaks hypotheses"@en . . "Explaining the severity of the 1960's black rioting a city level investigation of curvilinear and structural breaks hypotheses"@en . . . . . . .