Six people were stabbed at Arsenal’s Premier League victory parade in London on Sunday — hours after celebrations in Paris for PSG’s Champions League success turned the Champs Élysées into an “arena of urban guerrilla warfare.” An estimated 1 million fans packed the streets of North London to celebrate Arsenal’s first Premier League title in 22 years, with 24 people arrested, the Metropolitan Police said Monday. A man in his 20s was among six people stabbed in the mayhem. He was rushed to the