Upper Management allows bullying of middle of mangment. Is this considered harassment?

I have been a Team Leader for almost three years. I have always maintained a strong level of integrity and have strived to be consistent and fair at all times. Occasions arise where disciplinary action is warranted. When discipline is issued or is likely to be issued, I find a text book behavior pattern with employees (some not all) at play. Employees when called into account, immediately and aggressively deny everything, and then counter-attack with distorted or fabricated criticisms and allegations. Employees also quickly and loudly feign victimhood and repeatedly and publicly accuse me, the person holding them accountable, of picking on them. From this stage the process of harassment goes even further when upper management become involved. Initially when a complaint has been communicated about me to upper management, I am the last to know and may not receive communication (not even to ask what happened) until weeks after investigations have been initiated. Investigations are conducted improperly and unfairly. Sometimes policies are completely over looked in the favor of the complaining employee. I have been demeaned by having to attend meetings with Upper Management and the accusing employees so they could figure out whether or not I was telling the truth. Then I am even further humiliated by being forced to give explanations to prove the employees allegations false. Meanwhile the accusing employees are publicly through the use of gossip, giving the impression that they are negotiating or have been justified (by upper management), while they continue to display poor behavior. By the time my explanation is complete, and the truth has been told everybody has forgotten the original issue. Furthermore the employees are not addressed about telling the truth or making false accusations. Correcting performance issues or behavior concerns are distant and unlikely at this junction. I am finding that everything I say and do is twisted, distorted and misrepresented, leading management even beyond ou facility to believe that I am the problem.
Even though other Team Leaders have expressed these same concerns I feel particularly scrutinized and excessively monitored by upper management. I also believe currently, that our management group has gone great lengths to appease a bullying employee due to fear of complaint letters, grievances and litigation. I feel especially threatened because it is easier to get rid of me than it is to confront the mentality of an employee who consistently demonstrates poor moral behavior, poor performance and unaccountability.
I contaced the HR Director to investigate the details of my claims when I attemted to file for harrasment recently. He flew in to talk to me and walk me the harrasment paperwork. He did more talking me out of filling harrassment than he did helping me file the harrassment charges. As I was naming specific incidents He rebudled saying "your not being logical" "maybe upper managment had training opportunities but that doest mean they are harrassing you" he even said I was being frivilous. I think he was upset when I refused to sign a statment of record stating I decided not to file the harrassment charge. What should I do? I contacted the EEOC but I don't think this is covered under harrassment. I havn't finished filling by the way.