Camera Roll Duplicates Why do I have 2 of every picture side-by-side in my Photo Library? I don't edit or rename pictures at all. All I do is take pictures.  Then sync phone to my Mac with iTunes. But Photo Library on iPhone shows 2 of everything without a trash can to remove them. What is going on?
Chances are, you are importing these pictures into iPhoto. After that, under the photos tab, when you have your iPhone plugged in, is a checkbox to sync photos from iPhoto. This likely is checked. If these two things are correct, it will then transfer back onto your device, all the pictures that were/are on your phone. This is the only time I have seen pictures that I can't delete (that don't have the "trash can").

If this is the problem, it could be easily remedied by simply disabling the sync checkbox under the Photos tab for your device.