Fans of the blockbuster movie series “The Avengers” can virtually hang out with six of the stars Tuesday if they contribute to Joe Biden’s presidential campaign. But it’s an actor who’s not attending who’s getting most of the attention on Twitter — and much of it is hate. Chris Pratt, known for his roles in “Guardians of the Galaxy” as well as “Parks and Rec,” was blasted on the social media platform by people who said his conspicuous absence was evidence of his secret support of President Donald Trump. From there, the conversation devolved into criticism of Pratt’s Christian faith...