What was "The Incident" at work that caused an exodus in the work force?

This was years ago at a job I don't add to my resume.

I was the incident. I worked at a plastic bottle factory as a packer, and I had gotten this job through a friend. The 2 of us got along with the manager pretty well. Had common interests and about the same mindset about being employed there. A few positions opened up and he came to us and asked if we'd like to move up to one of them. I chose to move up to forklift operator, he chose machine operator. We both liked the jobs a lot more after that. Of course with a promotion comes a raise right?

The manager that had us promoted actually found a new job shortly after we had been trained and were starting to handle our jobs independently, he brought us into the office along with his replacement that he was currently training and told us that we were due raises and he had started the ball rolling on that. The new manager said he was informed of everything and would follow up on it to make sure we were taken care of.

3 months go by, our old manager is long gone, and we were still making the same pay. We approached the new manager about this. "I just need you to bear with me, I'm still working on that"

Ok fine whatever...3 more months go by and we don't see a dime. 6 months we've been making less than we should be now. Hell people are being hired at a higher rate than we make at this point. We confront him again. "Bear with me" he says again. I beared with him until about noon that day. I parked my forklift. I got in my car and left. All afternoon I'm getting calls and texts from people. My buddy tells me "you have no idea how many people days you just fucked up".

I gently reminded him that we were getting taken advantage of. That we've been working for a lower wage than new hires after getting a promotion for 6 months. I also spilled these beans to other coworkers texting me about what happened. It didn't take long...my buddy left mid day, 2 other machine operators left mid day. A string of packers stopped showing up, all but one daytime forklift driver either quit or walked out. They lost 10 people of varying positions in a month.

I couldn't help but grin when my buddy told me he was done and one of my coworkers told me how many people quit before they left. I felt like my walkout made a difference that time.