You wouldn't have turned your head and taken a look over your shoulder?
Exactly, I would have *investigate* my feelings. I would look into the situation.
If I found no evidence, I would then realize I was just being paranoid.
Your side chose to avoid this step, and have refused to look for any evidence against these individuals.
You're like someone walking down the street who 'feels' they're being followed and just breaks into a run at a moment's notice!