Cracker Barrel review: complaining about management showing favoritism, and firing me just because they had the power without investigation or anything

I was fired simply because I responded "whatever I know I didnt do anything wrong" to a manager that talks to people any kind of way.. I have never been written up or anything. I feel I should take legal actions for pain and suffering because the while situation was unfair. I was fired in the middle of lunch without even being able to be heard. Every since this manager been at this store he has shown on many occassions that he doesnt know how to talk to people as if his position over powers everything. If u haven't been there for along time they treat u very unfairly