I apologize if this comes off rude but I feel that there is a universal unwritten set of Do’s & Don’ts when interviewing for a new position. This one is ALWAYS a DON’T.....you do not ever speak poorly of ANY previous supervisors and/or management. That’s a very quick way to end your interview before it begins. Not to mention eliminate any consideration and chance that you may have had at obtaining the position you’re interviewing for.