Verrisirs are taught to give people a chance, even if they don't like them. This is because Verrisirs are known for their piety and friendly natures, as well as their craftiness.
Also, Verrisiran riot police are part of the military! No to mention, riots are seen as a form of socialist revolutionary movements, and socialism is despised in Verrisiran society (especially given the Socialist Atheist revolution that nearly toppled their entire civilization if the military hadn't stepped in and crushed it).