People can read the mind of others easily. Mostly they were impressed by the first impression of that fellow. But 90% of prediction goes wrong in the first impression.
Their mind has a wide space to captures the bad behaviour and recorded it into their inner brain.
But their brain never allocated wide space for the good things. Their brain repeats the thinking of bad things rather than good things.
So, whenever seeing the known person, people would think about the persons by thinking of his bad things.