Ramadan: Why do sunnis say bad things about shias, when they believe in the same things?

bukhari doesnt say i am infallible or sunnis dont say he is infallible.there are some criterias that makes a hadith authentic.These are determined by the scholars and bukhari compiled the best hadiths acccording to these criterias.he did the best a scholar can do. that is all we believe.and there is a difference between obeying a hadith whose authenticity is proved by certain criterias and following the judgements of an imam about religion.