I once had an argument with HR about how they don't help me with anything. One time another employee physically attacked me and I went to HR, figuring maybe they'll care about that. Of course they didn't. They answer to my hub management, atleast here where I work. My manager ordered all the other supervisors to force me and the other guy to work side by side for two days straight and stand there and stare at us to be ready to take our badges once we fought. My deposition to HR literally almost got me fired because they'd rather fire both of us than just one of us. I happen to be a pacifist (most of the time) so they didn't get their bloodsport but next time I'm calling the federal cops for the federal land I happen to be federally cleared to federally work on.
I say, friend* HR.
And they've attempted to DQ me for nonsense reasons in the past as well.