Search is still on in Mexico for 43 students who went missing last month . Arrest warrants have been issued for town 's mayor and his wife . Mexicans do n't trust government and always assume there is a backstory , says Ruben Navarrette . Comment:
Search is still on in Mexico for 43 students who went missing last month . Arrest warrants have been issued for town 's mayor and his wife . Mexicans do n't trust government and always assume there is a backstory , says Ruben Navarrette . Incident flies in face of efforts to improve Mexico 's image , Navarrette says .