In the 60s, 70s Canada experienced a period of combative unionism. Since this happened long after a spiderweb of legal machinery was cast over organized labour, the brain workers of capitalism were put to the task of understanding the causes / remedies. Their findings:

[this thread is based on "Industrial Unrest in Canada : A Diagnosis of Recent Experience / Le malaise industriel au Canada : un diagnostic de la récente expérience" by J. H.G. Crispo & H. W. Arthur] https://www.erudit.org/en/journals/ri/1900-v1-n1-ri2803/027896ar.pdf?fbclid=IwAR1YcUBSi0FtX2nByR7cLbBnxtd9VUnoginJRt796g9s6rBafyKIju9CXBA

Before diagnosing the wave of 'industrial unrest,' here were its features - which break into two facets: the sources of union militancy, and its illegal manifestations: