Is there ever a time that discrimination and not paying lunch breaks allowed by law?

We want to take on this company but taking on such a big company with endless resources is intimidating. A few months ago I was terminated because a co worker said that I told another coworker that they thought that I did not like people of a certain race. Although I had made several complaints about workers that constantly and freely used the N word and expressed hatred toward black women, nothing was done, they even promoted one of them shortly after. One was caught stealing and got fired, rehired, and she walked out on the job and got 5k in severance, We often had to work without breaks. The managers were told to take 30 minutes out of our time daily and we were told we had to approve the time to get paid. We were told if they did not show lunchbreaks that we would be fired or written up. There is a lot more to this but running out of characters. I am not the only one, there is countless people with similar experiences. Please help!