1966 Dart

The inside door emblems just pry off. You do have to take a bit of care doing it though, as the metal clip can break off the pot metal emblem. If you can spray some WD40 up in that area on the inside of the door, that will help. Use stiff putty knives or wide screw drivers and pry about an inch back from each end at the same time and on the same edge. The rest of the moldings will depend on each one. Some use push-on clips, some are bolt on clips. Usually the bolt-on clips have access from the back side. The areas with no access have push-on clips. There again penetrating oil and careful prying to get them off without breaking/bending things.