"Union activism" refers to the involvement and efforts of members of a labor union to advocate for their rights and improve working conditions through protests, strikes, negotiations, and other collective actions. Full definition
We had the opportunity to hear from giants of union activism such as Dolores Huerta, co-founder of the United Farmworkers, as well as Presidential Candidate Hillary Rodham Clinton! (reallearningct.com)
Firmly on the soft left of the party, Nandy is a former charity worker with a northern accent and a history of trade union activism. (totalpolitics.com)
This demonstration is nothing more than a throwback to the 1970s, when Union activism last mattered. (conservativehome.blogs.com)