Any criminal could carry a gun? Yes. And as stated, they do. So should police be able to stop and check people out solely because they possess a gun?
We'll come back to that.
A person carrying a pen could be about to commit forgery, and a person with a cell phone or tablet or laptop could be about to commit identity theft, in either case stealing someone's life savings and reputation. The consequences of these actions could be very far-reaching, beyond only that person; depending on who the victim is, it could affect many lives. A person entering a theater could be about to shout "FIRE!" and panic everyone in there, causing a melee toward the exit. Should people be required to obtain a LTCP or a LTCCPor a LTCT or a LTCL? Should police be able to stop someone, confiscate their pen, phone, tablet, or laptop, disassemble the same, and return it to the owner in pieces with instructions to not reassemble it until the officer is gone? Should the theater-goer have to super-glue his mouth closed, leaving only an opening large enough for a piece of popcorn or a drinking straw?
There is the famous story, which may be a joke or may have happened, I don't know. It seems a man stands accused in court of unlawfully entering and stealing from a business, and the prosecutor in her expensive suit makes the argument, "Mr. Smith, when you were arrested, you had all the tools on you needed to commit a burglary!"
He replies to her, "And Madame Prosecutor, you presently in this courtroom have all the tools necessary to commit prostitution. Should you be arrested?"
There is a concept known as "prior restraint", which as I understand it, says that even though a person has the ability to commit a crime does not permit infringement upon his rights until there is more evidence to prove he intends to do so. That's a grossly oversimplified definition, but I don't believe it's erroneous. Any of our legal eagles is invited to correct any (alleged! ) error in the preceding statements.
What it all boils down to is that we, the citizens of Indiana, are being prosecuted for exercising our rights without paying a "tribute" to obtain permission to do so. In Virginia, a few years ago, a person could carry openly without permit, but could not conceal without one. The argument was made that people were being arrested on the charge of wearing a coat without a license. It could be argued that we are being arrested not for carrying a handgun, but for not possessing a pink receipt.