I have found that people will try to make you feel bad about yourself if their lives totally suck. Somehow bringing you down to their level of existence (or trying to) makes them feel better about themselves.
That comes from my own personal experience. If it wasn't a TG peson, they would find something else. They want you to feel as bad about yourself as they do themselves.
When someone does something like this, it's like a sign over their head saying "I am a miserable human being and I have nothing going on in my life. I am completely worthless."
But then again, who knows? Maybe if you were to run into one of these people without the other, they might apologize for their actions.
If they see they can't stop you from living your life and being happy, they will probably move on to the next person. Maybe someone with a disability or of a different color.
But this is one way to make progress, we need to show people that we aren't going away.
They can only have an effect on our lives if we let them.