Chanting from one to 43, relatives of students abducted nine years ago counted out the number of the missing youths as they marched through Mexico City Tuesday to demand answers to one of Mexico's most infamous human rights cases.
With President Andrés Manuel López Obrador's term ending next year, family members face not only the prospect of a ninth year of not knowing what happened to their sons but fears that the next administration will start the error-plagued investigation over from scratch yet again.
