A lot of criticism came from the Mexican press corps as well as from Switzerland and other european nations. On the other hand however, there are documented atrocities and abuses committed by the Mexican government, as were also documented in other countries in the past.
Truth is, war is a dirty, nasty business.
Might seem like a political statement, but it is not. Both sides of the conflict could do so much better by sitting down and solving centuries long problems that have no reason to be Just my two cents worth.