Some possible circumstances where mass hysteria can cause mob rule and cause grave injustices are:
This refers to the story or poem that can be interpreted to have a hidden meaning that is usually political in nature.
Hence, we can see that based on Arthur Miller's play, The Crucible, there is the narration of the Salem Witch Trials where unfounded claims were made and this led to the burning of accused "witches" without a proper trial.
Such false claims can be made also and can cause mass hysteria such as the McCarthyism that pervaded American history where there were often unfounded claims about Communist spies in the American government.
Read more about McCarthyism here:
https://brainly.com/question/17606205
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