I spent four hours this morning looking on this scene, as it was in front of me as I struck this morning holding down a picket line.
It was an interesting position, staffed by myself and a gentleman probably 15 years my senior. We handed out leaflets explaining that the NTEU had called a strike on the basis of the university's decision to cut 220 jobs on very little realistic reasoning. This is bad for those 220 people of course, and also for students. Only one person - someone I had previously met - decided not to cross the picket line,* unless you count the other person who did a wide u-turn in front of me, though that could have been for any reason. Most of the time the attitude was that this was something we were doing for our own nefarious (or misguided, or benevolent) purposes. Staff members would often decline a leaflet on the basis that 'I've already got one' (rather than engage at all on the issue of why they weren't striking). Many people took leaflets and just said 'thanks'. Very occasionally people would give a reason eg 'I need to hand in a paper', 'I am on a contract and I need the money', etc. Some were hostile, though silently in the 'I am too important don't waste my time' style. It was all pretty disheartening.
* However this person then wanted to confer on where was a good place to get on campus without crossing a picket line.