Final answer:
Bus robberies generally occur in various situations and locations. They can happen during instances of civil unrest or protests, such as with the Freedom Rides in the 1960s, when buses were attacked by mobs. Bus robbers can also target public transportation in urban areas, taking advantage of crowded and chaotic environments.
Step-by-step explanation:
Bus robberies generally occur in various situations and locations. They can happen during instances of civil unrest or protests, such as with the Freedom Rides in the 1960s, when buses were attacked by mobs. Bus robbers can also target public transportation in urban areas, taking advantage of crowded and chaotic environments. The specific timing of bus robberies can vary, but they often occur when there is less security and law enforcement presence.