Brewer,
Keep Low, and Keep Moving.
Telling HR will have no meaningful benefit, as others have described it here. The only way to effect a meaningful change is to hire an attorney and sue the company. And, all that will result, is PERHAPS some sensitivity to the employee issue, if one is lucky.
And, of course, you don't want to do that while you're still employed there.
So, your plan to respond with meaningless drivel is best for self-preservation. Unless they want to ask you those questions while you sit in the witness box in a court room, there is no need to be truthful -- just be polite!
Don't get angry, continue your plan to seek employment in another part of the company, or another company altogether. Implementing that plan means you are doing something about the situation that fits you best.
After all, what you have is a business arrangement: they hire your brains for $ and the promise of professional development (most of which you do on your own anyway). If the promise and the premise for the arrangement isn't working out, you move on, and wish them luck in their current endeavors. It's up to someone else to exercise 'justice.'
-- Rita, retired.