Now I am in Puebla where I have experienced two clashes of culture.
First: I went to a cool museum Museo Ampara which juxtaposes Prehispanic art with colonial art in a shocking way. The first sixteen rooms of an old colonial house are dramatically designed and house sculpture and paintings from the different eras before ´conquest´ - as you walk out of a particularly dynamic room of large pieces of stone sculpture from some of the temples, you turn the corner into a faithfully reproduced colonial house with all the art and furniture from the time. The clash of civilizations couldn´t be more apparent. I really really liked this museum. Mexico knows what it is doing when it comes to museums.
Second: In the bus station, someone tried to take my bag. Then the guy who sells tickets for the ´secure´ taxi stand tried to shortchange me. I noticed after I walked away from the stand. I ran back to get my 100 pesos (about 10 bucks) and he tried to pretend he didn´t know what I was talking about. Luckily, when I am angry, I speak pretty good Spanish. Then the cab driver drove like a maniac and almost ran over a nun and a small child. What a change from mellow Oaxaca, slow-paced San Miguel, and even medieval Guanajuato.