Monday links (6/2/14)

A man from Quincy is the latest person to be arrested as part of the Boston Marathon bombing investigation. The government says Khairullozhon Matanov, a friend of the Tsarnaevs, lied to investigators and deleted files from his computer. So far, he has not been accused of any direct involvement in the bombing. When the Boston police spy on free speech, democracy suffers.

Brockton is trying to force private businesses to install surveillance cameras.

Two representatives from Massachusetts voted against restricting the federal government from raiding medical marijuana dispensaries (it passed anyway).

The NSA is collecting millions of photographs from the internet to develop facial recognition technology.