At least in the US it is Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances.
of course there is plenty of case law much later.
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So it must only be objectionable content?
Also no, your response is moot. I say this because I never had a right to your platform, your property in the first place. How can you censor me if I never even had a right to use your property?