Quite straightforward. Asking people to accept forced contractual changes without question is wrong. Forcing contrctual changes requiring them to pay more and receive less particularly so.
If they're not breaking any laws, they have every right to do what's needed to support the "business". Employees have to realise that the boss is THE BOSS. They decide what happens within the boundaries of the law, morals or previous arrangements don't come into it.
If you don't like the changes/terms/conditions, put up with it or get another job. Simple as that.
I despair. Presumably we should never complain about any government actions, we can always go to another country.
Err, yep! The government was formed as per the voting rules, so they have the power to do what they think is right.
...get another job. Simple as that.
Would that it were that simple, eh?
I know it's not always that easy, but there are options out there - other companies, other industries, retraining etc. And at least these striking people have a job, they should be very grateful for that in the current climate.