Teaching if done well is a difficult task, although it does get easier with practice. Teaching is also easiest when the students are interested, eager, and willing. When they aren't one or more of those, it can be very difficult especially when they view some of your subjects as wrong or even evil, as in evilution. However, for TPP it has never even been slightly dangerous even in those large, non-majors lectures where you almost failed the star basket ball center. Not all of us are so fortunate to live in an area as enlightened (??) as the upper midwest. Here's a link to a blog of one of my colleagues living in a "different country". Best if you read his story in his own words. He's a brave fellow; personally rednecks are best left alone.