Safe? In the USA? According to the media, everyone carries - law abiding, police, bankers and other criminals.
I see your media is about as accurate about the USA as the US media is about the rest of the world.
You might want to do some personal research, including talking to real people in the areas you intend to visit. Yes, there are some areas in certain cities which are not safe, regardless of the presence of guns. A gang can beat you to death in any country, without using any guns. (though a friend carrying might be able to save you...)
But living in Seattle, I'm not concerned about guns. Violence, in certain areas after dark. Guns are not necessary for violence. People have been finding ways to kill and maim each other since the the first jawbone of an ass. If I was really worried I would pack a gun and keep the odds more even, but it's a lot better idea to just avoid conflict entirely.
What removing guns from the responsible adult does is merely to make the balance of power completely in favor of the government.
Police state? Yes we had someone shot by them here once - Jean Charles De Menezes in 2005. He was unusual. Normally, you need to at least pretend or carry a chair leg or something. Your police are described as a little more trigger happy.
Hard to argue with our police tending toward the trigger happy, though they have some justification in that they may well be facing a real firearm.
I notice that even when shooting someone for carrying a table leg in a plastic bag the UK officers get off free. That "our police can do no wrong" attitude seems the same the world over...
On the other hand, the total number of shooting deaths from police in the US are something like one per day, in a country of over 300 million. (http://social.jrank.org/pages/1333/Law-Enforcement-Police-Shootings.html) It seems quite likely to me that one person out of more than 300 million might actually need to have deadly force used on them, and that the officers are truly facing imminent death themselves. (though I don't for a second believe that is always the case, or that police don't abuse their power, as they tend to do all over the world)
With our police it is quite likely that it is not a table leg, but a real shotgun... That might seem to argue for just getting rid of guns altogether, but we don't trust unlimited power in the hands of the few. History shows that has gone wrong many, many times.
A de-armed populace is a vulnerable populace, to a great many possible dangers, both from within and from without. You might be getting away with it now, but time will tell... The world may not always be as it is today, and someday you might wish a sizable portion of your populace could quickly get to firearms, and have the life long training in how to use them.