Mexico protest: Over 30,000 march against new president

over 30k., the election before this one, AMLO had over a million marchers
he was said to be ready to take the country into a civil war
so what happened since?
why the smaller numbers now?
why the big huge gap in votes?
3 to 5 million votes are said to have been the difference between the PRI and PRD
3 million votes which put the PRI back in the control room
but i don't know why people are outraged at the "election" results
the system worked to the fullest
it did what it was supposed to do
and that is, to validate the system's results
that is the same old, doing the same ole tricks