A group of 9/11 relatives called the PGA Tour’s planned merger with LIV a ‘betrayal.’

A group of relatives of people killed on Sept. 11 issued a blistering criticism of the planned merger between the Saudi-backed LIV Golf series and the PGA Tour, calling the tour and its commissioner “paid Saudi shills” for agreeing to it.

Relatives of 9/11 victims have been vocal in their opposition to the Saudi-backed LIV series almost since its inception. Most of the hijackers of the planes used in the 2001 attacks were Saudi. The 9/11 families have saved some of their harshest criticisms for those who have taken part...