Sure, that's normal human pleasure from having their beliefs reinforced. It's probably and even bigger problem for vague unfalsifiable ideas like "police are ra

Sure, that's normal human pleasure from having their beliefs reinforced. It's probably and even bigger problem for vague unfalsifiable ideas like "police are racist", "capitalism is evil" or "immigration is bad". If a news story appears to support such a belief, the person will have their belief reinforced, even if it's wrong and the (true) news story is an exception. One photo of an immigrant vandalizing a statue or one photo of a border guard making a child cry says "See? You were right! That whole political party is bad!".