Backwards. Criminals have cause to fear an armed citizenry.
Liberals, Libertarians, anarchists and your various comrades despise the rule of law.
"To suppose arms in the hands of citizens, to be used at individual discretion, except in private self-defense, or by partial orders of towns, countries or districts of a state, is to demolish every constitution, and lay the laws prostrate, so that liberty can be enjoyed by no man; it is a dissolution of the government. The fundamental law of the militia is, that it be created, directed and commanded by the laws, and ever for the support of the laws." -- John Adams