Dude plz stop trying to turn this into a racial discussion lol. Most black people don't think their fight for equal rights has anything in common with this. Black people were viewed as an inferior race, which was wrong. Nobody is viewing transgendered people as inferior, rather, we expect them to treat others and their privacy with respect.
So scientists don't believe that the X and Y chromosomes determine sex? lol, I think not. It appears you and me have a disconnect here, you refer to their gender, I'm referring to their sex. And I didn't say anything about post op's, but allow me to clarify. If the person does have the sex change, in that scenario, I'm personally ok with them using the new bathroom, but that's just my opinion on the matter. As I'm sure you will agree, that is a very different scenario from someone who still has their "old parts". And from what I've personally read, it appears that it is uncommon for most transgendered people to go all the way through and get the sex change. The estimations I've seen suggest that there are 700,00 people that identify as transgendered, but only a fraction of sex change surgeries occur in the US each year (estimated to be between 100 to 1,000). My source was:
http://www.surgeryencyclopedia.com/P...#ixzz3IEs78dnj
The number can be found under "demographics".
There are many instances in which you are expected to have a license, don't be silly Endus. The only thing that has changed is transgendered people are being expected to have ID in the event that they panic someone when they go into the restroom.