Siblings appear on stage with president at campaign event in Philadelphia and offer full-throated support of White House run

Prominent members of the Kennedy political dynasty delivered a full-throated endorsement of Joe Biden’s re-election campaign on Thursday, a pointed message that was in equal measure a stinging repudiation of their relative Robert F Kennedy Jr, who is making an independent run for the White House.

Kerry Kennedy, one of six siblings of the controversial candidate on stage at a Biden campaign event in Philadelphia, called the US president “my hero” as she celebrated a litany of his achievements she said would have pleased her father, the late former US attorney general Robert F Kennedy and late uncle and president John F Kennedy.