Profiteering tech giants are mining your information and using it to sell you more stuff.
The government is watching your online activity and storing it for what use, we don't know.
Bob Scheer thinks both are dangers to democracy. The journalist and founder of Truthdig.com says silencing dissent is one possible danger from the mass collection of all our data.
His new book "They Know Everything About You" wants readers, especially Millennials, to wake up to the fact that privacy is important and shouldn't be sacrificed for the ease of shopping online.