You must've missed the scene where Hope tries to give a little girl her teddy bear and she sees that he's a l'Cie and everyone freaks on him and Snow and starts to attack them. Yes, because for them to stand still or just pace around muttering to themselves or to talk to you would make sense in such an environment.

The game makes it quite clear that no one outside fal'Cie, The Calvary and Hope's Dad is going to talk to you if they know you are l'Cie. The ones that do appear before you become l'Cie, don't know you are l'Cie or too worried about almost dying to care or notice.

Again, most of the time when you talked to Shinra soldies, they didn't know who are. If they knew you were a terrorist they'd fight you.