How about more preventive measures rather than just reactionary ones? Maybe stronger security measures that make it much harder if not physically impossible for

How about more preventive measures rather than just reactionary ones? Maybe stronger security measures that make it much harder if not physically impossible for one person to do much damage in the first place? As for prosecution (whether civil or criminal) - I don't know, if there's a law that can enforce it, should that not be on the table? And if there isn't, then perhaps there should be?