evidence: Robert F. Kennedy Jr. declared his "independence from the Democratic Party" on Monday in Philadelphia, ending his campaign for the Democratic presidential nomination and launching an independent bid that he said aims to heal the political divide, which he portrayed as a fiction of a corrupt establishment. [...] Kennedy has struggled to gain traction in the Democratic primaries, even with voters expressing a desire that someone younger take the party banner from President Joe Biden. His views on issues like vaccines and abortion has left him outside the Democratic mainstream. [...] Kennedy, the scion of the first family of Democratic politics, said it was "very painful" for him to leave the party of his uncles (one was president; another was senator), his father (a former attorney general and senator), his grandfather (an ambassador) and his great-grandfathers (one was a mayor and a congressman; another was a city council member) and break with their "political dynasty."