These dump truck drivers are fed up, and they’re not going to take it anymore.  Dirt that is.   In a protest about working conditions and safety practices, hundreds of dump truck drivers have parked their trucks and 
“strike” includes a cessation of work, a refusal to work or to continue to work by employees in combination or in concert or in accordance with a common understanding, or a slow-down or other concerted activity on the part of employees designed to restrict or limit output
What do you think? If it is a strike, what can the “employer” do? If the drivers are not “employees”, because they are self-employed, do you think an agreement among drivers to refuse to work like this is unlawful? Why doesn’t the government put a stop to the practice of overloading trucks? Should the state be responsible for doing that?