LOS ANGELES, May 19 — Hometown and racial pride fired up royal wedding watchers across the United States on Saturday, from pre-dawn partyers wearing pajamas and fancy hats in Los Angeles to Twitter posts from Miami to Indianapolis hailing “the blackest royal wedding the U.K. has ever seen.”Television broadcasts of Prince Harry tying the knot with Hollywood actress Meghan Markle, who is biracial, drew cheers from crowds who had gathered in the otherwise dark outdoor courtyard of Cat & Fiddle pub in Los Angeles long before dawn.Excitement revved up with each gesture acknowledging African-American heritage — from the fervent sermon of Reverend Michael Curry to a choir singing black spirituals to the performance of cellist Sheku Kanneh-Mason, the first black musician to win the BBC Young Musician of the Year award.“This little light of mine sung by a black choir to end the royal wedding.