Extremist PETA activists should be put up against the wall and shot
pour encourager les autres.
(
Pour encourager les autres: "in order to encourage the others" in French. Its origin is from Voltaire's
Candide:
"Dans ce pay-ci, il est bon de tuer de temps en temps un amiral pour encourager les autres." (In this country it is good to kill an admiral from time to time, to encourage the others.)
The phrase is generally used when the punishment for some offense is entirely disproportionate to the gravity of the offense.)
It's one thing to promote vegetarianism and denounce animal cruelty. (You can take my Big Mac when you can pry it off my cold, dead fingers!

) It's another thing to resort to guerrilla tactics to get your point across.
My two cents' worth (before taxes take 'em all away!).