The opposite of "are given one due" is to be dismissed or overlooked. When someone is not given their due, they are essentially ignored or excluded, often due to bias or prejudice. This can happen in various situations, such as when someone is passed over for a promotion, not given credit for their work, or simply not acknowledged or appreciated. It's important to recognize and overcome any tendencies to disregard or undervalue others based on factors such as age, gender, ethnicity, or income level. By giving everyone their due recognition and respect, we create a fairer and more inclusive society.