I agree that no one should make parenting harder but I find it offensive that there are some who feel that if their children should be allowed to disrupt those around tehm simply becasue they can. In this case the Op stated that the "screaming to her herself screaming" child was annoying. Why on Earth is that acceptable? I agree that the woman was out of line calling the child a brat but I wonder how long it took her before she asked the OP to control the child.
The OP made it more difficult when she engaged the woman in a snippy discussion. She could have simply apologized and moved on.
I have raised three children, hauled countless nieces and nephews shopping and would be embarrassed beyond belief if any of their behaviors drove someone to that measure.
Babies shriek, they have found their voices and they love to use them. It is up to the parents to teach them to temper that exuberance when they are in public. By the time those children are two they should understand "shhhh". I watch a little one year old and already her Mom is teaching her that she needs to use her "indoor" voice. What those who love her find amusing (translate that to What I find amusing) is not going to be cute to strangers trapped in the same building as her when she is shrieking at the top of her cute little lungs.
I was thinking the same thing.
Not quite sure how shopping in Walmart can equal being trapped? Anyone that has the gull to call a child a brat INFRONT of the child is disgusting in my book and needs more than a shhhhhh herself

OP... don't let other people ruin your day. I totally sympathize with you. To me, it didn't sound like your dd was that bad. You were in Wal-Mart... not church, so the other lady had no reason to say anything to you. If she doesn't like the crying kids, then maybe she should shop elsewhere... Wal-mart is family / kid friendly... that's who they market to right? In any case... maybe if the lady thought your kid was a brat.. she should just keep it to herself. She doesn't know what you're going through... I believe you said you had 5 kids, so, unless she has 5 kids herself, she wouldn't know. I've got 4.. and any chance I get to go to the store without all 4 of them is a blessing.. so, if I stretch it a bit, and they get a little cranky, and maybe they should be home for a nap, but if I can run one more errand with out all 4 of them, then it's a good thing.. otherwise, I'll be dragging all 4 of them around, and having 4 crazy kids and one crazy mom... I don't always have the option of leaving them home, and sometimes you just got to go out and get things done. I'm not dragging them through the stores for entertainment.. it's because I have to get something done, and I have no other option. So.. you have my sympathy...

Kind of like all those people who need to talk on their cell phones in a movie theatre or while driving in a car because they're on an emergency call. FTR, the OP said nothing about her child being autistic.