The real Casey Jones was actually a real hero and was heavily involved in Union activities, as my friend Mr Casey has given me a link:

http://suite101.com/article/the-true-story-of-casey-jones-a185973

The song Casey Jones Union Scab was a parody of the prviosly written song Casey Jones, and was to use ‘Casey Jones’ as a metaphor for all railworkers and not aimed at the real Casey Jones.