Have You Ever Met Someone For The First Time And Instantly Disliked Them, Without Any Actual Reason?

Yes, at times, I do. Usually I try not to judge or stereotype, give some time but at times there are strong signs or vibes.
Sometimes just instinct or sixth sense decides.
But
There are signs that tell you about the beliefs, attitude or even socio-politic leaning of the person.
Dress is one sign, body language and mannerisms & other visible signs or things that can he sensed.