Not sure how often it has to be explained, but the first ammendment and similar provisions in other countries only apply to the government, they do not apply to businesses.

There seems to be a huge number of people who have very strong opinions on first amendment rights, despite having never actually read the constitution. It's infuriating.

(see also: "well regulated militia")

//Censorship is illegal because free speech is protected by the first amendment

Only when the Government censors. The 1st amendment doesn’t apply to private individuals.