Independent candidate Robert F. Kennedy Jr. on Sunday acknowledged endorsements from more than a dozen of his relatives who are backing Democratic President Joe Biden, noting that he feels no ill will over the family political divide. “Some of them don’t like the fact that I’m running,” Kennedy said of his relatives, after a comedy showcase in suburban Detroit to benefit his campaign. Kennedy — who last year launched an independent presidential bid after first challenging Biden for the Democratic nomination — was reacting to the endorsements from his sister and other relatives last week, a move by the Biden campaign that signals how seriously the president’s team is taking a long-shot candidate using his last name’s lingering Democratic magic to siphon support from the incumbent.