Strikes and protestors

Ever since the miners started striking other departments of labour has decided to do the same.Miners put the S.A's economy income on a stand-still.Finally after weeks of speculating they finally got their income increased.That gave way for truck drivers to go on strike,farm workers soon after striked as well.The thing is that theses protestors destroy property I mean I understand the fustration but to destroy property I don't know.People have soon went from strike to protesting for service delivery.