This is a habit for every person. People never want to have the blame so they always blame it on another person. People should never judge without facts.
During the beginnings of the interrogations, many people blamed the oddball, Les Goodman, to be the alien. Many people jumped to conclusions because he was never interested in what happened, his car started twice when the cars and electricity didn't work, then his car stopped automatically. People only had one fact against him because somebody said they saw him staring