Oppression is endorsed by the men of Truth [when they don’t speak up against oppression], without them really wanting it

"Oppression is endorsed by the men of Truth [when they don’t speak up against oppression], without them really wanting it. This is the sin that the elites and the sons of the great leaders of the early era of Islam committed. But on the other hand, Imam Husayn (A) would not tolerate it, and hence he rose up."