Speaking of Wired's excellent coverage:
They just reported on a Department of Homeland Security memo that went out to local police forces ...
... urging them to consider even the most innocuous and bog-standard protest activity as dangerous ...
... like skateboarding, or walkigng around "on foot"
no joke
The story: 
Unpaywalled: https://archive.is/4Dgw5
An excerpt:
WIRED
Skateboards and Livestreams: DHS Tells Police That Common Protest Activities Are ‘Violent Tactics’
DHS is urging law enforcement to treat even skateboarding and livestreaming as signs of violent intent during a protest, turning everyday behavior ...