What assumptions do you make?

In my continual evolving in my outlook and life, I have become more and more aware that I make erronioius assumptins about people. I can see that I’ve done it all my life, and for many years it was something completely unconscious.
I now, for instance, am able to be aware that a person who acts like they’re trying to start conflict is acting on something which is completely internal and has nothing to do with me. I still have to go through the thought process and get to the conclusion; “Oh, they have something going on, this isn’t about me.” But at least I can be in a different place and react with kindness rather than anger.
I catch myself assuming things about people based on the look on their face or tone of their voice, and can now maintain my own smile rather than act in kind, because I’m frequently wrong or have misread or exaggerated what I perceived their emotion to be.
I’ve assumed things based on a person’s age, or clothes. This is something of which I am constantly aware, and constantly having to remind myself to step back and allow the other person their freedom without my judgement.
This is a step in a more generous direction than where I used to be, and I hope that at some point the process becomes automatic rather than something I have to take myself through every day several times a day.
Thinking about it makes me wonder what else I may be assuming and not even aware of yet.
What do you assume about people and what makes you aware that you actually are assuming? Do you care? Do you have expectations about people or do you just accept them as they are? Do you think that they are assuming things about you based on your presentation? Do you care?