Addiction: to devote or surrender (oneself) to something habitually or obsessively -- I'll add that once the addiction is created, any willpower is lost and very hard to regain.
Violence is using force, physical or manipulative emotional. Creating or encouraging that addiction is force and violence. Putting ingredients on purpose into food that trigger minor addiction is force. Manipulating emotion with advertising (especially to children/youth) is force. And to some degree restricting options of food choice can also be force.