Unable to restore Camelot's throne, Kennedy resumed his Senate career and became an indispendable progressive advocate within the legislative branch. While the center of political gravity shifted to the right, Kennedy was a powerful counterweight. In 2002, unlike too many of his cowardly colleagues, Kennedy voiced dissent against President Bush's march towards war with Iraq.
Yes, I acknowledge Kennedy's personal failings. They've been well documented. The death of Mary Jo Kopechne at Chappaquiddick Island when Kennedy left the scene of the accident and failed to immediately report it to authorities was despicable. Unquestionably, he got off far easier than the average person would have. If I were a member of Mary Jo Kopechne's family I likely could never forgive him. That said, this country is far better off for Kennedy's service in the Senate.
Below are four YouTube audio recordings of Kennedy's memorable speech. It's words still echo today.