I found this in the militant vegan fuckers section of the homicidal anarchist's cookbook:
A tantalizingly and exquisitely evil (though likely to instill cognitive dissonance) method recommended for militant vegan fuckers with a grudge and the will to buy a lot of meat:

Take carnivorous human of your choice. Bludgeon into submission as required. Place in comfortable yet particularly unspacious cylindrical metal container with small, hinged flap set into the lid at the topmost end, and a sturdy hose supplied source of fresh air. Place the human so prepared into longer tube or well of a diameter only slightly greater than the container, but *at least* three feet longer.

Fill well with raw meat. Type of meat is obviously a matter of personal preference and availability. Sit back and enjoy the *true* expression of the carnivorous drive as a survival issue. The more tenacious of carnivorous humans despite survival and escape in the short term, usually die of bowel explosion complications shortly after escaping.

              /`````  fill tube/well with meat.
             /
          b P  
              b
             | 6 #          |
             | bP b         |
             |  P  #        |
             |   # P b P    |
             |  P b   P  6  |
             |  /````````\  |
 smart       | /  |``|   --------lid (weight of meat will keep this down)
carnivore-------- |__|    /||
uses flap    || \________/ ||
to access    ||            ||
manageable   ||  insert    ||
quantities   || carnivore  ||
of meat      ||   human   {|}========
             ||   here     ||     \
             ||            ||      \---  supply of air.
             ||            ||
               \          /
                \________/
				

Alternatively, for the less dedicated, use a bolt-gun, if only for the irony.