Final answer:
John Handcox, a socialist folk singer, train-hopper, and labor organizer, was known as 'the Golden Voice of the Great Southwest'. He was a union organizer and member of the Southern Tenant Farmers' Union (ST F U) and wrote songs that inspired and spoke to the struggles of workers.
Step-by-step explanation:
The socialist folk singer, train-hopper, and labor organizer with the given first name Bruce who was known as 'the Golden Voice of the Great Southwest' is John Handcox. Handcox was a union organizer and member of the Southern Tenant Farmers' Union (ST F U). He wrote numerous folk songs that spoke to the struggles of workers and rallied others to the cause.