Oh yeah, Senju's do it all babysenju do genjutsu....honestly never knew that not being sarcastic either i only knew about other parts that you mention
Danzo and the elders were the ones who suppress them not senjuNeither. The uchiha wanted to take over the village after generations of discrimination, justifiable? somewhat imo.
The senju discriminated from the start. Also one of their famous members was the one who created edo tensei, that alone should tell you that he mustve used live human sacrifices. Secondly going by madara and mu's reaction tobirama mustve used that jutsu quiet frequently
the 2nd hokage actually did itDanzo and the elders were the ones who suppress them not senju