Censoring someone on your private property is absolutely an exercise of your free speech. If someone plants a political sign on my lawn without my consent, I ha

Censoring someone on your private property is absolutely an exercise of your free speech. If someone plants a political sign on my lawn without my consent, I have the right to remove it because I have the free speech right to decide what political messages get broadcast from my personal property. The counterfactual notion you are suggesting, where everyone has the right to plant lawn signs on my property without my consent, is a violation of my free speech rights, not an enshrinement of theirs. > Free speech is a negative right, meaning for it to exist others must not stop you from speaking. Free speech exists when no one can stop you speaking on a platform that you own (servers, printing presses), or whose owners consent to publish your speech. You don't have a free speech right to compel third parties to use their platforms for your own speech.