I never expected a trip to Walmart would turn into a showdown over my wheelchair, with a stranger demanding I give it up for his tired wife. As the situation spiraled out of control and a crowd gathered, I realized this ordinary shopping day was about to take an extraordinary turn.So there I was, cruising down the aisles of Walmart in my trusty wheelchair, feeling pretty good about life. I’d just scored some killer deals on snacks and was headed to check out when this guy — let’s call him Mr. Entitled — stepped right in front of me, blocking my path.”Hey, you,” he barked, his face all scrunched up like he’d smelled something bad. “My wife needs to sit down. Give her your wheelchair.” I blinked, thinking it was some weird joke. “Uh, sorry, what?” “