Crowd, [41], [42], [43], [45]

Crowd psychology, [35], [41], [45]

Courts, [96]

Culture, [19], [21], [80]

Curiosity, [44]

Custom, [15], [19], [34], [49], [63], [67], [69], [120], [142], [145]

Cycles, [15]

D

Death rate, [133]

Delinquency, [138]