From Texas Standard:
In May, Mexico's Secretariat of Public Education fired 3,000 teachers. The government agency claimed the teachers had not worked for three days. The teachers say they were on strike because of recent education reforms.
In June, the government arrested the leader of a dissident teacher union splinter group, CNTE, on charges of corruption. Then yesterday, six people were killed and dozens of civilians and police were injured in clashes in the Mexican state of Oaxaca.
The tension between teacher unions and the government is escalating.