The National Rifle Association and its former longtime leader were found liable Friday in a lawsuit centered on the organization’s lavish spending. The New York jury found that Wayne LaPierre, who was the NRA’s CEO for three decades, misspent millions of dollars of the group’s money on pricey perks for themselves. LaPierre, 74, sat stone-faced in the front row of the courtroom as the verdict was read aloud. The verdict is a win for New York Attorney General Letitia James, a Democrat who campaigned on investigating the NRA’s not-for-profit status. It is the latest blow to the powerful group, which...