Orwell wrote:
As much as Mr. Weiner is an obnoxious douche bag, he has the same freedoms as I do. Since Britain chooses to deny rights to my fellow man, by extension they deny them to me. I will not travel to the United Kingdom or deal with British companies (insofar as I can avoid it) until they reverse this childish behavior.
It is unusual to publish a list, but whatever the reasons for this gimmick all countries exclude people for political reasons, not least the US. The US merely quietly denies entry rather than publishing a list of banned people. By your reasoning there is no country in the world that you would visit (except maybe the Vatican, which has no border controls with Italy - ironically Europe's last absolute monarchy). Whatever the motives for publishing this list, it's at least less hypocritical than other countries that are less open about it (such as, I insist, the US). There are better moral grounds for boycotting say, Saudi Arabia (where you can be chucked in prison for respectfully, peacefully petitioning for a constitutional rather than absolute monarchy).
And no, freedom of travel is NOT a right in liberal democracies, unless you believe there is not a single liberal democracy on the planet (US immigration officials can deny entry at will even if you have a valid visa). All countries in the world, democratic or otherwise, impose visas and such requirements on at least some nationalities, and deny entry at will. Maybe you should talk to some Chinese about what they have to go through to even set foot on US soil (even if it's just to walk from one plane to another at the airport).
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I am the steppenwolf that never learned to dance. (Sedaka)
El hombre es una bestia famélica, envidiosa e insaciable. (Francisco Tario)
I'm male by the way (yes, I know my avatar is misleading).