A right-wing coalition, which has received funding from both the Koch Brothers and the billionaire Education Secretary Betsy DeVos, is launching an aggressive attack on the tens of thousands of teachers and education supporters who have been demanding increased school funding and teacher salaries in recent weeks.

As the Guardian reports, the State Policy Network (SPN) is distributing a guide to anti-labor activists across the nation, with the aim of helping them to discredit the protests that teachers have been organizing in Oklahoma, Kentucky, West Virginia, and Arizona.

Such demonstrations, SPN argues in the guide, “hurt kids and low-income families” because they keep students out of schools and can force parents to miss work.

Even the right-wing editorial board of the Washington Post recognizes that it is Republican governments slashing education funding—not striking teachers—that is harming to students in the long run.

“What the teachers are protesting also hurts children—that is, a long-running and systemic disinvestment in public education,” wrote the editorial board. “Responsibility therefore lies with the governors and legislatures in these red states who have allowed teacher salaries to get so low.”

Notably, while arguing against the protests, SPN also admits that teachers are in fact underpaid, and cautions against portraying educators as ungrateful, as Oklahoma’s Republican Governor Mary Fallin suggested last week when she compared the state’s teachers—who have gone a decade without a pay increase—to “a teenage kid that wants a better car” after they rejected a $6,100 raise and a $50 million education funding package.

“A message that focuses on teacher hours or summer vacations will sound tone-deaf when there are dozens of videos and social media posts going viral from teachers about their second jobs, teachers having to rely on food pantries, classroom books that are falling apart, paper rationing, etc.,” reads the memo.