Zach Bryan broke the attendance record at Gillette Stadium in Foxborough, Massachusetts, the article reports.

The country star drew thousands of fans to the venue owned by Robert Kraft.

He wore a “Free Palestine” shirt during the show, according to headlines from Variety and Billboard cited in the article.

Billboard's headline says it was not the first time he wore the shirt.

CBS News noted the concerts came weeks after a controversy involving Macklemore and Robert Kraft.

Observers saw defiance in the wardrobe choice given Kraft's prominent public profile, the article says.

Analysts are weighing how artists express political views on big stadium tours.

The article says the episode may shape how venue operators write artist contracts and guidelines.

Read the full article on Zach Bryan's record-setting Gillette Stadium show.