So what I think of as "free assembly" way back when, is the private meetings that our founding father had in taverns and homes when they were planning the rebel

So what I think of as "free assembly" way back when, is the private meetings that our founding father had in taverns and homes when they were planning the rebellion. Today I would consider that to be, say, Antifa (or whatever group you like) organizing via whatsapp or facebook groups (and maybe to some extent Twitter). My concern is when the companies behind these platforms shut down groups that they don't like. Sure, the participants could theoretically just meet in person to do their planning, but in a country as big as ours that simply won't happen.