

I think education and access to general information is a human right. However, there might be cases where a direct internet connection may be logistically impossible to provide or it may be the wrong choice for a particular person. For example, a person in jail for cleverly hacking computer systems could potentially cause problems if they are allowed to use a computer while imprisoned; in this case, a warden with a paper printer acting as a proxy may be the best option to bring them requested information posted online. There is also some media online that could be harmful to rehabilitation and is in the prisoners’ and the prison’s best interests to refuse access to, such as violent internet content provoking those who are recovering from a history of violence.
Having the right to post online is a separate issue and should typically be determined by whom the host site chooses to provide or deny service to; for example, John Hinckley Jr., who attempted to assassinate Ronald Reagan, was able to post his music on YouTube prior to his release. Restraining orders can also apply to online spaces to protect victims from further harm.
Personal death threats: I was a mod on a Facebook group that banned a guy for being hostile to others, and this guy turned out to be paranoid and probably had some other mental health issues going on and believed there was a vast conspiracy against him with us working with people we had never heard of and with other online forums that he had been hostile on
Impersonal death threats: just the typical stuff from rightwingers for being harmlessly different in some way