It is currently illegal to:

Brandish a weapon, to threaten another with a weapon, to fire a weapon in public and it is even illegal to shoot another person - except in specific cases of self defense or preventing immediate harm of others, etc.:

Therefore, this ban will prevent lawful citizens from being able to defend themselves and others in those specific exceptions already noted; such defense would be from those who would intentionally violate the above already existing public laws.  Those individuals with the intent to violate the above noted laws will disregard this new regulation as a far lessor offense than that which they are intent on committing.

This prohibition will not prevent risk to state employees as is stated in the attachments to the proposal, and in fact, will assist and identify to those who intent to cause bodily harm that these areas where firearm carry is prohibited to be safer for them than in the general population and will concentrate the likelyhood of workplace violence where there is the lowest likelyhood of rapid resistance.    

Currently those areas with the highest firearm related crime rates are those with the most restrictive laws against firearms, look to Chicago as an example.  Conversly look at the statistics surrrounding localities that have enacted concealed carry and note the DROP in both, the gun and non-gun, related crime rates, look no farther than Florida and Virginia when concealed carry was approved !