I've done the same...labeling people with horrible names out of anger and fear.
In fact, one of the most powerful things I learned from here (SR) is that I could forgive myself for feeling that way.
Along with the fear and rage I felt with my son't addiction, I was ashamed that I had the feelings I did.
Recovery helped to teach me compassion, and that I had no right to call anyone anything. It simply wasn't my business.
Thank you for your kindness
((((hugs))))
Cece