Liberty Trees were trees where old style colonial candle lanters would be hung as a signal that this was a place for gathering to discuss political circumstances.
It was not just a figurative symbol it was also a literal tree (elm BTW).
OhForPeteSakes! I should have remembered that! Getting old, I guess.
Yes, we need signaling for gathering places as well. I suppose Bud Light bottles might get too many people just standing around.