Dealing with negativity

The past few days have been extremely difficult for me. I’ve had to listen to various family members using the R-word and talk negatively about autistic adults. It seems to slip their mind that I’m autistic and standing right in front of them.

I’m always filled with such sadness and hopelessness when this happens. I’ve said many times before that I don’t feel comfortable with the words they use but it never seems to change anything. 

How does everyone else cope with this type of situation? Are my boundaries lacking? Am I too sensitive?