Why social media surveillance isn't the answer to our gun crisis

In 2014, Tashfeen Malik's family in Pakistan started to worry about her Facebook posts. 

It was the religious extremism that concerned them, a family member told the Los Angeles Times. A year later, Malik and her husband, Syed Rizwan Farook, declared their allegiance to ISIS on social media. Then they killed 14 people in San Bernardino using semiautomatic rifles. 

In the aftermath, 26 senators asked the Department of Homeland Security to conduct social media background checks when reviewing visa applications — something President Donald Trump approved last year.  Read more...