It s not scratches,it s cracked by the middle,after it break more and become not functional.Even with discs readers with no center support,cause when you put the disc;a center support lift off to spin the discs.

There are reports of they being forced to join. Here they throw stones at the windshields to make them stop.
The legit trucker's strike have been taken by interventionists, this is people asking for military dictatorship (yeah there is still this kind of stupid), not cheaper fuel.
This video shows their methods.