If you don't understand, you need to...
This site should help you understand more:
http://www.ushistory.org/betsy/flagcode.htm
Men and women fought for the honor of the flag. We mere civilians need to understand and respect that. An upside down flag has a unique message. Those who display an upside down flag for other reasons are showing the same disrespect of those who burn an mutilate it.
I'm not closed-minded. I often change my views after I listen to others. The difference between me and a politician is that mine is genuine and intrinsic; a flip-flopping politician does so in an attempt to get more votes by pandering to his audiences. I hope you see the difference there.