Knives, guns, and hunch-based searches that turn up guns.

Use iTunes? https://itunes.apple.com/us/podcast/short-circuit/id309062019
Use Android (RSS)? http://feeds.soundcloud.com/users/soundcloud:users:84493247/sounds.rss
Newsletter: http://www.ij.org/short-circuit

Gravity knives: http://www.ca2.uscourts.gov/decisions/isysquery/93e5c2bd-9ffc-4d07-bcdc-638a09c8b1c5/2/doc/13-4840_opn.pdf#xml=http://www.ca2.uscourts.gov/decisions/isysquery/93e5c2bd-9ffc-4d07-bcdc-638a09c8b1c5/2/hilite/
Slouching in a high-crime area: http://www.ca6.uscourts.gov/opinions.pdf/15a0637n-06.pdf
D.C. gun law: http://www.cadc.uscourts.gov/internet/opinions.nsf/46AD1BE68518069B85257EC400534ABB/$file/14-7071-1573768.pdf
Village Voice article: http://www.villagevoice.com/news/how-a-50s-era-new-york-knife-law-has-landed-thousands-in-jail-6662589

Clark on Twitter: http://www.twitter.com/conlawwarrior
Evan on Twitter: http://www.twitter.com/evanbernick