Which social theory could explain why a crowd outside a government building became violent following a speech by an infamous politician?

Question

Quizplus · Accepted Answer

Contagion theory explains how a crowd can become violent due to the spread of emotions and behaviors among individuals within the crowd. In this case, the speech by the infamous politician may have triggered certain emotions and behaviors among some individuals in the crowd, which then spread to others, causing the violence to ensue.

Which Social Theory Could Explain Why a Crowd Outside a Government