A lot of people forget their manners when they're talking to transgender people. Some allies think they mean well, but they say rude things to trans people that they would never say to cisgender people. This is just because most people haven't brought up with a good idea of the social protocol for some situations that are new to them. A lot of hurtful media has given people wrong ideas of what to do in these situations. For example, television shows where transgender women get asked intrusive questions give people the idea that this is what to do as soon as they find out that someone is transgender.