Laws criminalizing consensual gay sex have been scrapped in about 25 countries in the last 20 years, but more than 70 nations still have such prohibitions, a U.N. expert said Friday in a first-of-its-kind report at the General Assembly. And in many places around the world, lesbian, gay, bisexual and transgender people live in “a crucible of egregious violations” of human rights, enduring violence and discrimination, said Vitit Muntarbhorn, the U.N.’s first-ever independent expert investigating violence and discrimination based on sexual orientation. The world body’s Human Rights Council appointed him last year, in a move that met significant opposition amid...