The Ludwig Boltzmann Institute of Fundamental and Human Rights explains in a short animated video what is prison violence, what international standards say about it, and why it is important for National Preventive Mechanisms to prevent it. This video was produced by the the Ludwig Boltzmann Institute of Fundamental Human Rights as part of the EU funded Project "Improving judicial cooperation across the EU through harmonised detention standards - The role of National Preventive Mechanisms" by the Ludwig Boltzmann Institute of Fundamental Human Rights, the Associazione Antigone, the Bulgarian Helsinki Committee, the Hungarian Helsinki Committee. The video was prepared by Natalia Bueno.