Ryan Ekvall:

A controversial art lesson in the Madison Metropolitan School District draws similarities from a 2012 incident in which a Louisiana middle school teacher was fired after displaying his student’s anti-President Obama drawings.
Kati Walsh, an elementary art teacher in Madison, published anti-Gov. Scott Walker political cartoons drawn by her kindergarten, first- and second-grade students. One drawing depicts Walker in jail, and another in which he appears to be in jail and engulfed in flames. Walsh said the orange in that drawing actually represented a prison jumpsuit.
Robert Duncan, a former Slidell, La., middle school social studies teacher at St. Tammany Parish School District, was fired after an internal investigation found he acted incompetently in displaying several student drawings depicting harm to Obama. The incident was first brought to light after a parent leaked photos of the drawings to WDSU, a local TV news outlet.

After learning to read well, critical thinking would certainly be a useful topic for all students.