They’d be welcomed with open arms in ~30% of the country. Screening for thought crimes isn’t a slippery slope, it’s a frictionless plane.

Do I think it's the best use of taxpayers' dollars (ie, mine) to screen for objectionable content on social media? No.

Do I trust the government to police opinions? No, especially when there's no accountability and appeals process.

Do I believe the overall benefits that harassment-free international travel brings to this country outweigh the costs of letting in some visitors whose views I disagree with? Yes.

What action would you take re such posters who are citizens in the country?

I wouldn't exactly be jumping for joy over it, but that's a juice that's not worth the squeeze.

Yes