The Silicon Valley billionaire criticizing billionaires: In the nine years since the death of Apple’s Steve Jobs, his widow Laurene Powell Jobs has kept a low-profile. But now, she’s stepping off the sidelines and jumping into some of the most contentious political fights of our time — immigration, education, and press independence. As the 35th-richest person in the world who is worth $27.5 billion, her efforts against wealth inequality may seem disingenuous. But, she says, “I’ve dedicated my life to doing the very best I can to distribute [my wealth] effectively.” “We don’t have to accept the world that we’re born into as something that is fixed and impermeable.”