read the article man. they were picketing in front of the building they where assigned to work but didn't work for the bldg owners. they where third party janitors. sorta like if your outside maid service went on strike and picketed in front of your house.
They ruled it illegal for teachers in Washington State to strike. They did it anyway. They were never prosecuted and won great gains. The lesson here is Together we have the power, they couldn't possibly fire all the teachers early September. But divided who knows, its scarier. The suck ass chicken- "I cant afford a strike" retards, the ones that need a better contract the most, bring all our wages down.