What to know about Ed Sheeran's tour after Macklemore was cut and artists dropped out

Ed Sheeran's tour of North and South America has been roiled by the decision this week to drop Macklemore as an opener because of the rapper's onstage pro-Palestinian comments. Since then, all of Sheeran's other supporting acts have dropped out, including a group that performs with Sheeran during part of the show.