Well, this is certainly the case. Many migrants said that they were encouraged and directed by Moroccan police that informed people in advance, removed border controls and on the crossing site, encouraged people to cross.

It's an exaggeration to call this an attack - those people were not military, we not legally obliged, conscripted, or paid to do it - the are willing migrants, they actually want to immigrate and live in Spain. What changed is that they were given the opportunity, "they did it because they could".

In any case, they are all back now. It failed.