No, but making it harder for people to have acces to guns with basic things such as a Gun license or some such. Look at any country with Gun Control Laws. They seem to be doing very well mass shooting wise.
"If police are the only defense, we will be a police state"
Police state is a term denoting a government that exercises power arbitrarily through the power of the police force. Originally, the term designated a state regulated by a civil administration, but since the beginning of the 20th century it has "taken on an emotional and derogatory meaning" by describing an undesirable state of living characterized by the overbearing presence of the civil authorities. The inhabitants of a police state may experience restrictions on their mobility, or on their freedom to express or communicate political or other views, which are subject to police monitoring or enforcement. Political control may be exerted by means of a secret police force that operates outside the boundaries normally imposed by a constitutional state
