You may have seen in the media, or even real life soldiers that wear the American Flag backwards. I have noticed that some big rigs, buses, planes, and others putting on backwards flag decals.
Until it was explained to me, I thought this was wrong. The Flag Code says the Stars should always be to the observer's left. Here is why it is right. Back in the day when armies would rush headlong into each other, the flag would be at the center. Troops on the left flank would see the flag and the stars would be on the left. Those on the right flank would see that the stars were on the right.
That is why the flag patch is backwards on the right shoulder. So that the stars look like the are flying forward into battle.