(Portland, OR)  --  Portland Public Schools officials say more than 400 students from middle- and high schools participated in an anti-Trump protest.  Many of the students reportedly skipped school or walked out of class to participate in a march that began at Pioneer Courthouse Square around 10:30 yesterday morning and disrupted traffic as it progressed.  Students crossed the Hawthorne Bridge and proceeded into Northeast Portland near Holladay Park, the Lloyd Center, and the Moda Center.  The number of participants in the march had tapered off by around 5 p.m.