Those people weren't ideologically against you on housing, healthcare, or poor salaries etc. If they were, you wouldn't be able to convince them. The reason they were easier to move is because of their class position. If you talked to a business owner, they would be against improving many of those things, particularly poor salaries and retirement. Healthcare keeps employees tied to work too.

With workers, there isn't an economic interest against changing those positions. With a business owner there is. I'm sure you understand this since you are talking about unions. In the taxonomy I described, I would categorize the people you're talking to as "soft" or "uninformed" because you are encouraging them to take action in their own interest.