A citation from the first circuit ruling that video taping police doing their job is constitutionally protected (speech).
“[t]he freedom of individuals verbally to oppose or challenge police action without thereby risking arrest is one of the principal characteristics by which we distinguish a free nation from a police state.” - City of Houston vs Hill, 1987
This ruling gave me a warm and fuzzy I haven’t felt in a long time.
Ruling (brief+link): http://www.universalhub.com/2011/court-says-state-law-banning-recording-police-offi