I don't normally watch it, but I had been watching a UK reality TV show called “I’m a Celebrity Get Me Out of Here." As all the celebrities were sat around the campfire discussing what they thought of each before going on the show, they had already formed opinions which proved to be completely wrong, once they got into camp.
Unfortunately, and it's a human failing, we form opinions about people before we’ve even spoken to them. We hear things and form opinions on what we hear, see or read about. We judge people on their clothes, by the cars they drive, their social status, education and race.
Perhaps we must learn not to have preconceived ideas, or form opinions on people we don’t really know, because nine times out of ten, the opinions we've already formed will turn out to be wrong.