Sounds like a good idea but Oregon is WAY spread out, particularly down here in Southern Oregon.
I love the idea of a bunch of non students showing up to protest but there would likely need to be preparation in the form of reserving a "free speech zone" at most campus's. The RCC campus in downtown Medford is interesting in that when you walk out almost any dooryou're on a city sidewalk. Darn, you're policies don't apply.
I was actually asked for ID by a security guard while I was standing on the sidewalk and kindly refused as 1) I wasn't on campus. 2) He wasn't a cop and had no RAS even if he was. Silly man threatened to call the volunteers from the PD and then I'd HAVE to show ID...I set him straight on that and he went to calling the cops and I'd be arrested for loitering....I set him straight on that as well. Then I waited until he had to move on before going into the campus as I didn't know the rules on campus for ID. Seems there is NO requirement to even have a student ID unless you're doing something that requires ID (financial aid, borrowing a library book, etc.) so I now carry "sterile" at school. I hope he asks me again some time.....LOL
Are you aware of Students for Concealed Carry on Campus (SCCC)? I was going to open a chapter here but they insist against carrying an empty holster on campuses that prohibit firearms carry if you're an officer of their organization.