The two main responses I've gotten from foreign tourists who know absolutely nothing about the U.S. fall somewhere along the lines of,

"Wait, you can do that? Legally? That is so awesome!"

&

"oh god they're crazy and there's a whole country of them. Will no one think of the children?"

Both are the extremes when in-person. Online is a different story. Be default the average person you meet online is going to be a few degrees meaner than irl. Even the people who hate America still have something they are envious about, no matter how small, and with enough discussion will admit it. Shills and bots are incapable of saying anything positive, so that's sometimes a giveaway.

I've had one person describe the U.S.A as a war-torn country where roving bands of plain clothed militia patrol the streets to keep police away... and the more I talk to these particular people the more I realize the only thing they know about us is from 1920's prohibition, mafia, tommy guns, and gangs from Detroit. Trying to explain that those good times are long gone is met with the usual gunphobia. Like knife attacks aren't common in their own country. lol.

Then there's people who expect America to be this small theme park with a gun range every few miles. "You're gonna walk to the store? On foot? Without a car? Okay. Take your phone and let me know how far you get." Closest Target was 10 miles. These types tend to get bored rather quickly as the shock of freedom of speech and right to defend yourself wears off.

The only people I've heard talk about hating America are the people who've had their market droned. Yeah. I would be pretty mad too, but then they have to start adding layers of delusions on top of that so they can lie to themselves about how "all of america wanted this particular mud hut selling coffee and bread to be destroyed, and that means all americans are sociopaths." I really don't have a response to that most of the time. Where was this? What country is that [city/town name] in? Never heard of it. Sorry. For some strange reason they have a hard time understand how our media doesn't make a fuss about it, so the average America really has no clue.