>> who would you say is the toughest on trump? >> colbert has been the most savage in his attacks. >> i'm the most unpopular president in modern history. i've deepened america's racial divide. we are on the brink of thermonuclear conflict. it's got to be the pink tie, right? >> other hosts are making equally if not more substantive critiques of the president. >> trump's trust in breitbart actually goes way back. >> every time we see john oliver once a week, they've spent a full week preparing what are essentially investigative reports. >> holding up a breitbart article does not make you seem more credible. >> oliver, a daily show vet, has earned the rep of being one of the sharpest political satirists on late night. he devotes a huge chunk of hbo's last week tonight to fact finding. >> the press is going to be a key element in helping us sort