Oh...are you right! I hobbled into the grocery store and was trying to pull a cart loose from the stack and this woman got so annoyed that I was taking so long she started huffing and puffing, bumped into me, walked to another row and yanked it out so hard it ran over my foot. I also have experienced some very kind people that see me struggling...like when I can't reach my arm up to get something from a shelf...and offer to help me.
A gaggle of teen aged girls, from my experience, can be the most inconsiderate. They are either walking and texting each other or strolling along in a line so no one else can get by. Maybe I was like that as a teen too...but I can't remember!