Oregon pro-gun groups have been doing this since 1988.
The Ceasefire morons have learned to rent entire lots or building for this … if they don’t, another part of the lot gets rented by FFL holders who will set up tables there and put up competing banners.
Check out our local TeeVee on this story, and note the large number of po-po hanging around. That has to cost big bucks in overtime, and the City willingly pays this. If Ceasefire Oregon were to simply rent tables at one of the gun shows, they would still be protected, by private security, which would cost the taxpayers zip.