What do you believe about fan violence?

If a fan of the home team is injured due to another fan bringing an illegal weapon into the stadium, what do you feel the victim is owed? Or what do you feel the home team should do to help the injured fan? Should we settle for violence is expected at games? Does the home team owe nothing to the fan? Should security measures that were expected in the past like pat downs be ignored because they are not a part of the then NFL policy?