Buzzfeed: “On the weekend of May 29, thousands of people marched, sang, grieved, and chanted, demanding an end to police brutality and the defunding of police departments in the aftermath of the police killings of George Floyd and Breonna Taylor. They marched en masse in cities like Minneapolis, New York, Los Angeles, and Atlanta, empowered by their number and the assumed anonymity of the crowd. And they did so completely unaware that a tech company was using location data harvested from their cellphones to predict their race, age, and gender and where they lived. Just over two weeks later, that company, Mobilewalla, released a report titled “George Floyd Protester Demographics: Insights Across 4 Major US Cities.” In 60 pie charts, the document details what percentage of protesters the company believes were male or female, young adult (18–34); middle-aged 35º54, or older (55+); and “African-American,” “Caucasian/Others,” “Hispanic,” or “Asian-American.” “African American males made up the majority of protesters in the four observed cities vs. females,” Mobilewalla claimed. “Men vs. women in Atlanta (61% vs. 39%), in Los Angeles (65% vs. 35%), in Minneapolis (54% vs. 46%) and in New York (59% vs. 41%).” The company analyzed data from 16,902 devices at protests — including exactly 8,152 devices in New York, 4,527 in Los Angeles, 2,357 in Minneapolis, and 1,866 in Atlanta. Sen. Elizabeth Warren told BuzzFeed News that Mobilewalla’s report was alarming, and an example of the consequences of the lack of regulation on data brokers in the US…”