The New Yorker interview with San Francisco's school board president reveals how political ideology has replaced knowledge among especially younger American leftists.Last week, The New Yorker ran an interview with San Francisco school board President Gabriela López, a 30-year-old former teacher leading the district’s charge to bury American history. It’s eye-opening, to say the least.López was elected on a campaign to cancel history. Under her leadership, the nation’s seventh-largest school district has spent its time not teaching its 57,000 students — who have been “learning” online for nearly a full year — but plotting to take the names of historic...