I don't know if I'd be able to maintain my calm in those situations, but yes, even when someone is treating you like shit, we have an obligation as humans to be decent to other people. Not excellent, mind you, just basic human decency.
It's easy to be nice to people who are nice to you. It's hard to be nice to people who are shitty to you, and often times, it's the people who are worst to you that most need basic decency offered to them.
It's easy to be nice to people who are nice to you. It's hard to be nice to people who are shitty to you, and often times, it's the people who are worst to you that most need basic decency offered to them.