People shooting each other in the face comes normally hand in hand with a form of dehumanisation.

For example instead of thinking about humans which protests they think about rioters. Or they see certain kinds of humans depending on skin color or religion or similar as less "human" as some form of "malformed product of nature" and other bs*. This circumvents any instinctual natural protections humans have against harming each other. Oh and for example in case of companies humans (employees) tend to be reduced to a tool costing some money and giving something back. Similar thinks often apply to many politicians.