In the US, mass media pretended that there was not a single case of fraud in the 2020 presidential elections. Now the evidence is exposed and the media are proved wrong.
For example, a case inside the United States Postal Service was exposed by employee Richard Hopkins. He revealed that his boss told him to give him all the ballots that arrived after November 3 so that he could change the postmark for those ballots. He published a video revealing this, then he had a 4-5 hours interview with the federal police who tried to convince him to change his mind and this video became public. But he maintained his accusations.