Sphinx,
Intimidating other workers to the point where they are afraid to come to work is what militant union members do during strike action. It's called bullying the majority into doing what the minority want. They may start out calling management bus drivers scabs but they soon get carried away and everyone is a scab.
It's why Thatcher got a lot of support for killing the unions during her dictatorship. I think she went too far, but this sort of action reminds me of the bad old days when unions ran the country.
On the other hand, because the bosses have awarded themselves a HUGE pay rise this year, the workers feel justifiably agrieved.
Having worked on most strike days, I have not seen very much disruption so perhaps the strikes are superfluous. Whatever happens, I don't believe the strikers are going to win.
Doc C.