Is that charitable trust going to fight for wealth equality and a more progressive tax system?

See

https://www.tabletmag.com/sections/news/articles/buffett-kin...

if you want to know what his kids are up to.

That article seems to accurately describe the charitable activities of Peter Buffett and his NoVo Foundation, but it's worth pointing out that Howard G. and Susan Buffett have charitable foundations of their own that seem to have a more conventional philanthropic approach, one that may perhaps be more amenable to a clearer focus on getting the right outcomes. It seems unwarranted to assume that the description in the article applies to the Buffett children's activities as a whole.

Just think, if that charitable trust is structured correctly, it could be used to pay a modest believable "administration" salary to many many generations of offspring all while paying out some token pittances to make the whole thing seem genuine.