At first, it may look like its the fault of the people striking, but when you really think about it, they wouldn't have to strike if they were paid fairly and have a safe work environment, so any issues caused by a strike is really just the employer's fault.
TLDR: Blame their employers, not the people going on strike.
This is the rule for any strike, anywhere, in any industry. When people take a stand instead of taking a paycheck, it means their situation was literally unworkable.
There's never been a strike where management was in the right.
When we had nurses strikes in the U.K. a year or two ago, people were saying “they should be doing it for the love of nursing, not money”. Fucking infuriating attitude.