Se dice que, a lo largo de la marcha de miles de seres humanos, el caminar y vitoreo por sus ideales liberan energía equivalente al de un pequeño sol y los amaneceres que precede. 

Se supone pues, que esas manifestaciones son el principio de esas manifestaciones.

It is said that, throughout the march of thousands of human beings, walking and cheering for their ideals release energy equivalent to that of a small sun and the sunrises that precedes.

It is assumed, then, that these manifestations are the beginning of these manifestations.