<human>: Can you succinctly summarize the text in 1-3 sentences?

I'm probably over-analyzing this.

I walked into the library, and a lady who looked in her 70s was ahead of me. She opened the door, looked at me, then let it go. Didn't hold it open. The thing that baffles me most is that she looked at me, and seemed that she deliberately let the door close on me. Idk if it was cause she was having a bad day, if she's racist or whatever, but I didn't like being treated like I wasn't there.

Then when I was leaving a little boy, maybe 4, held the door open for me along with the two ladies in front of me. 

I've mulled over it and I've decided that they just have had different upbringings and ideas of how to treat a stranger. But I also thought about how the current and younger generations are always being told of how rude or unappreciative we are, when in fact, there are people of every generation that flaunt those traits.
<bot>: Elderly woman did not hold open the door for me. Later, a little boy held the door open for me.