I think it is perfectly fine to to pissed off in early sobriety, it's just as ok as being happy or sad, or anxious or whatever; we are humans, and emotional. Much of the learning I did in sobriety was learning how to deal with my emotions. I had spent so long drinking to avoid my feelings that when I stopped they became that much more strong and difficult to deal with.
This is when meetungs were great, because u could see others were going thru similar emotions and I wasn't alone.
Good for you for sticking to your values. I hate bullies, were are all here on the planet together, why can't everyone respect that?