Unions. Pro or con?

Thinking about becoming an educator? You may want to think again, at least if you live in North Carolina.
Over the past five years community college instructors in NC have averaged two.five percent in  raises. That's not per year, that's over a five-year period. This year there was excess money in the state coffers.So it would make sense that the faculty, and staff, would at least get a raise to offset cost of living, right? The faculty and staff at the cc I worked at are getting a one percent raise and a seven hundred and fifty dollar one-time bonus, while the chancellors at the four-year institutes who are already in the six figures are getting nine to eighteen percent pay increases.
WalletHub ranked North Carolina fiftieth on the best and worst states for teachers chart.
I never expected to be saying this in my lifetime but I think its time for the schools to unionize. At one point in America's history unions were necessary for the middle class and the poor to survive, and then they weren't (necessary). But I believe the pendulum has swung.I think if the middle class is going to survive, it's time to bring them back.
What's your take on unions? Pro or con? And are you in a job where your raises keep up with the cost of living?