Summers and Markusen (1999) subsume state terrorism under the broader heading of collective violence. Even beyond non-governmental groups, states might apply collective violence against innocent people. Among the strategies governments use as a form of collective violence fall (1) arbitrary arrests, (2) imprisonment without trial, (3) torture and (4)a summary execution of members of alleged enemy groups. Particular outcries are caused by, for example, police or other para-military groupings of persons who jump from (1) to an execution of an innocent person or of several even seemingly unrelated murdered persons (4b).
Amnesty International attempts for decades to fight against such occurrences on an almost global scale. The need to complement the national legal systems through supra-national instances as well as NGOs in this domain is obvious. Even the most advanced democracies need to permanently check their systems for several forms of state terrorism or abuses of power to eliminate or intimidate opposition.
Staub (1999, pp.195) undertook an attempt to list elements that allow to predict and maybe prevent collective violence. The theory starts with “conditions of life” more generally like economic, social and political conflicts as well as rapid social change. Activation of basic needs in people, like several forms of security, challenges to a person’s self-concept, traditional values, simply the customary way of life (COVID-19) or new comprehension of (climate) realities, they all challenge old world views of people (superiority) and their place in the world (AI).
Claims for support by other people (government), missing connection to others (individualism) lead people to focus more on their own needs and isolated action. Rebellion as collective violence is directed against differences in status, power and (social) rights. Self-interest is becoming an overriding societal principle. Racism (p.200) and police violence (p.201) are part of Staub’s theoretical considerations. He argues in favour of training of situations in which a police officer is likely to become unnecessarily violent or to stop it if it occurs. At least a medium-term solution.
Framing of such training as preparation of good teamwork rather than betrayal is crucial in action teams, be they in the police or the military. The reader on “violence subie, violence agie” by Seron and Denis (2000) allows us to take a step back and reflect on the spirals and repercussions involved in violence from the perspective of the person who carries out an act of violence and the victim. A social-therapeutic approach aiming at reconciliation is worth trying, albeit a lot of obstacles. Collective dance rather than collective violence is the immediate as well as long-term solution (More on dance here). 
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