Tens of thousands of frustrated teachers will air their grievances at protests across Oregon -- they're fed up with overcrowded classrooms and a lack of support staff https://t.co/Zxq7VyngqB

Tens of thousands of frustrated teachers will air their grievances at protests across Oregon -- they're fed up with overcrowded classrooms and a lack of support staff https://t.co/Zxq7VyngqB (via Twitter http://twitter.com/CNN/status/1126079005491380229)