Re: Your "nutter on a rampage" is China's "Tiananmen Square"
"I feel they have the right to rant. It's freedom of speech. I have the right not to listen as well"
You have a right to listen or not as you choose.
Of course TPTB have a right listen as wel if they choosel and to decide whether the ranter needs watching. It's hardly the same as mass surveillance if they choose to watch a rant someone has elected to broadcast to the world.