You realize that laws around rights are made to protect people and promote equality right? It for sure should be illegal to discriminate, one person's lack of freedom (A boss's to hire based on personal freedom) is promoting possibly thousands of people's guaranteed freedom (assuming that they don't just discriminate anyway, but the laws would make it a lot more difficult to do so). It doesn't really matter if the boss person's rights are being infringed if they are preventing many other's rights, they need to get with the times and realize that freedom and acceptance is in, useless discrimination is out in our new more advanced age.
How would you feel if you were a transsexual and someone didn't hire you for your dream job specifically because you were that way?
You'd probably feel like shit and be very angry. It would be very unfair. But oh! The stupid boss man didn't like it. Damn! You're just as hard of a worker as the others, only you were born a certain way so that somehow makes you inferior. This situation in and of itself it very unfair, and no amount of jadedness on your part makes it okay.
You are a white guy, in the majority, and you would think much differently about these issues if you were a minority and had experienced REAL discrimination.