Lesson from the teacher? Kick him while he's down

From Milenio, the following photo of a teacher in action:

That's Sigfrido Olmedo,  subdirector of the Technical Secondary School No. 1 in the capital of Oaxaca. He is seen here kicking the Oaxaca secretary of public security, Marco Tulio López Escamilla, while he's already down. López Escamilla had walked over to Olmedo and other demonstrators to try to have a dialogue with them, clearly with little success. Olmedo, the teacher, was recognized by his own students.on Facebook.