For the longshore sector, the last time that I know of when scabs were used—and from 1935 to 1976 I wasn't alive, so bear with me here—was at what we call the Battle of Ballantyne, where the government and the police force used tear gas on the public for the first time ever, and they beat my people and murdered my people.
Just as one more thing on strikes and the anti-scab legislation, and I'll be quick, the reason there are so many strikes and lockouts happening right now in Canada is that workers are pissed. Workers are pissed off that the employing class will not share the profits that it's making and will not give the working class the due that they deserve for making those profits for their employers. If Bill C-58 had actually been in use for the last couple of years, all these lockouts and these strikes, where the employers have been using scabs and have drawn it out, would have been a lot shorter.