Portside

Stone tools unearthed at a site in Kenya predate any identified human ancestors -- previously thought to be the first makers of stone tools -- by hundreds of thousands of years. These finds "will force us [to rethink] what makes us humans ... Increasing knowledge of our remote past is casting doubts on previous certainties and is showing that the process of becoming what we are now is far more gradual than what we previously thought."

It took only a few minutes for Mr. Obama’s account to attract racist, hate-filled posts and replies. They addressed him with racial slurs and called him a monkey. One had an image of the president with his neck in a noose. But they appeared to be a small number in what was an otherwise social-media-fueled show of love for Mr. Obama, who was drawing followers at a rapid pace — nearly 2.3 million by Thursday afternoon.

The fundamental problem with both the “not now, maybe later” and the “not on your life” rejections of electoral politics is their small mindedness, their view that political activity is a zero sum game where a Sanders candidacy inevitably diminishes some other truly valuable activities because there are only a limited number of potential activists out there.

Roy Zimmerman -- 'Defenders of Marriage.' Killer T Cell: The Cancer Assassin. Oscar Peterson's Piano Lesson. Ensnaring Kids in 'Advertising Empire.' LA Minimum Wage: $15 by 2020.

After a decade long campaign led by Unite union, fast food chains have committed to ending zero hour contracts in New Zealand. Tens of thousands of workers in the fast food industry will now have secure hours of employment. This victory in New Zealand -- supported by workers in Indonesia, Korea, Philippines, Hong Kong and elsewhere represents a fundamental shift in the employment relationship of the most vulnerable workers in the country

Reader Comments- Progressive Wins: Philadelphia / Los Angeles; Third Party Builders Meet; What U.S. Really Owes Black America; Thirty Years After MOVE Bombing; The Nakba: The Intentional, Deliberate Dispossession of Palestinians; Remembering Guy Carawan; David Letterman Show and whiteness; Educators and School Staff Make a Difference; Mike Brown Would Have Been 19; Announcements- Greece Solidarity 4 All U.S. Tour; Left Forum 2015 Today in History-Post-War Strike Wave