TG? Whats a positive gesture to show acceptance for Tgs?

Well..just treat people like you would treat anyone else....as normal human beings. Respect their gender pronouns, and dont ask them personal questions that you wouldnt ask non trans people (like...dont ask them about their , life, their past etc...) unless you have a close relationship, or they offer the information. You could also volunteer at local LGBT centers or trangender support groups....