Why is America's largest teachers' union encouraging students to skip school?

Why is the National Education Association encouraging students to skip school?Yesterday was May 1 — May Day — and across the country, activists staged coordinated demonstrations under the banner of “no work, no school, no shopping.”These are sweeping political claims, touching on immigration policy, cultural debates, and national partisan conflicts.The National Education Association — with roughly 3 million members, making it the largest labor union in the United States — was among the organizat...