These men tried a period pain simulator. Their wild reactions carry an important message.

MONTREAL — The Liberal party is calling itself a “big tent” party, but progressives say they would like to see their values upheld. “It was a very important moment in time, in 2015 when Justin Trudeau said that this party is a pro-choice party, and people who run for us must be pro-choice, or at the very least be committed to upholding those values,” said Liberal MP Karina Gould. “And I heard the prime minister say that he believes that as well, and so I’m going to hold him to that, and I’m going to hold anybody who joins our party to that as well,” she added. More than 4,500...