I was a union member and actually an officer of the local lodge for over 12 years at my last job.
Be glad there are no unions at Target. All a union would do is put a barrier between you and your supervisors much worse than anything you can imagine.
Trust me on this one- Unions in a retail setting do more harm than good. Any pay raise you would get would be sucked up by union dues and being forced to buy into any 'insurance benefit' that the union decides to impose. Those dues would in turn go to support political candidates you may or may not like, but you have no say because the union knows what is best for you. Question the union and you will be blacklisted and any future support you may need from them will be minimal at best.
Last place I worked the monthly dues were equal to half a days pay for a new hire. Then the union gave everyone AD&D (which the company already provided for free) insurance for a small charge of 20 bucks a month. No choice, you had to pay if you worked there. Most of the union reps were guys who had worked there for decades and had no interest in the new guys, they just wanted to protect their own paycheck and screw everyone else.
If you wish you were in a union- beware of what you wish for.