None of that is jailing for a political belief. You mix beliefs and actions.
It is an expression of political belief, which is what is normally meant in such contexts. I don't see much point in detangling the two, as belief that is not expressed is by definition something that you cannot act against since you don't know about it.
Not if they are following the law no
See, you've got that backwards. If your government makes specific political beliefs illegal, and sends you to jail for expressing them, then you are not free.