The worst people at concerts, from self-involved selfie takers to nonstop filmers

OTTAWA — As Canada turns 159 today, the country prepares to enter a phase where its free trade deal with the United States and Mexico could become more uncertain by making it subject to annual reviews. Prime Minister Mark Carney has downplayed the prospect of all three parties agreeing to extend the deal, known in Canada as the Canada-United States-Mexico-Agreement (CUSMA) for another 16-year term, telling reporters the day before while visiting northern Quebec that he “wouldn’t expect any drama,” while adding that “I’m not looking for my pen.” Putting pen to paper on a deal that...