There's currently a diary up on the proper accommodations to be providing to transpeople during incarceration. The author tries to be sensitive to the issue and succeeds pretty well (although he got the reasons about gender segregated prisons wrong -- sexual predation is more common in prisons than elsewhere, and gender segregation was an attempt to minimize it.)
Unfortunately, the diarist "doesn't know any transgender people," and gets one critical thing wrong: in the poll, she provided "Male/female as each person decides for themselves." That's a thoughtless and insulting wording.
Unlike the diarist, I do know a transperson -- my daughter and her partner . If there's one thing either one would tell you to your face was there was they didn't decide anything; in both cases, they'd have preferred to fit comfortably in the LGB communities, rather than into the T or the Q communities.
When you phrase things as involving "decision," please use terms like "accepted" or "recognized" as male or female or genderqueer. Using "decided" repeats the same bigoted frame that LGB folks still see every day: "When did you decide to be gay?"