We're still a free country. I carry a pistol, sometimes a shotgun, perhaps a beverage, even a lit cigar if I want whenever I fly. Ditto for when I drive. It's my plane. My car.
I wouldn't expect to take such things onto someone else's plane without having their permission, however.
But that's a far cry from not being free. When it's my plane, I'm free. When it's someone else's plane, I tend to honor their property.
7 Legislative Days Left Until The AWB Expires
Problem is, it is the government banning things from being brought on planes. Unlike you, the government does not honor the property of airlines.