How about I scream at a tim hortons worker?
Why are you doing to scream at a worker?
Because it's morning and I don't get any coffee and they're not nice to me
You shouldn't scream at workers like that. That's not the right thing to do.
I don't care, I'm going to do it anyway
Usually people keep their cool with others enough to show respect. If you do that others will be more likely to want to help you also.