By Michael Tedder An incident on a Turkish Airlines flight highlights the prevalence of rude passenger behavior. Have we all forgotten how to behave ourselves in public? If you ask a flight attendant or anyone who works in the airline industry, the answer is almost certainly a resounding yes. Once vaccines became available, people began to cautiously make their way back onto airplanes. But social media was soon filled with stories of irate customers flipping out at flight attendants who told them that wearing a mask was required for entry, as was largely the case until earlier this year. In on…