One of these things is not like the other..

LGBT 

 

There it is those four letters that have been in all the Media so much lately. We all know what they mean, Lesbian, Gay, Bi-Sexual and transgender.  So which of these things is not really like the other?

Most will that tell you that Transgender is Gender orientation, NOT Sexual Orientation. 

Lesbian, Gay and Bi-Sexual are all Sexual orientation.

Who, when and why are we always grouped together? I'm not against anyone, it's just that these things are completely different and intersecting groups. A Transgender can be a Lesbian, Gay or bi-Sexual, but does not have to be. The reverse is also true, a Gay man does not have to be transgender.

So how did these labels come to be associated with each other this way?