Social media platforms have an even more powerful weapon: the ability to share your perception of reality. Sure, they can't arrest you, but they can slowly shift your world view just by amplifying some stories and not others.
I do not consider this to be a major achievement on my part, but I have successfully managed to navigate my way through life without using Facebook or Twitter to facilitate my worldview. There seems to be this assumption that we are compelled to use these services to engage with the world around us. Heartbreaking to see this...