How to remove photos from Iphone that were synced from the computer?

How to remove photos from Iphone that were synced from the computer?

Added (1). My phone has some pictures of my ex that I uploaded while we were still together, but I can't seem to get them off! Even when I first plug my phone into my computer and I click on "View internal files" those pictures won't show up and that folder can't be deleted from the phone.

Actually go to setting and then remove, no I'm kidding.

Go into itunes while your phone is plugged in, go to your phone summary near the top right of the itunes window, go to photos between books and info, and uncheck sync photos from if you want all of them gone but if you only want some gone then remove them from that folder I suppose and re sync it