Any bike can be used for Mexico ,but low ones will have to take care on topes.
About the decapitated tourists, wasn't this the story about a bunch of bodies including one or two Canadians a month or two ago who were found on the beaches near Pto Vallarta as a result of the drug dealers group clearing out among their own rank s ? Thes Canadians were reported to have been frequent visitor to PV and had business relationships with the drug cartels. Calling them "tourists " is being generous but probably inacurate.
The new Presidente of Mexico could make his major claim for historic place of fame by initiating a program to standardize and civilize the TOPE all over Mexico.
As topes now exists in many forms many horrid oversized examples placed in inappropriate locations.