In the TNG episode "Conspiracy", Commander Remmick is identified as the Starfleet officer at the center of an infiltration of Starfleet by a group of mysterious alien entities — the "mother" parasite seems to be contained in his body. Picard and Riker then kill Commander Remmick:
(There is a longer version of the scene here.)
Were Picard and Riker actually trying to kill Commander Remmick?
Note that earlier in the episode, Admiral Quinn — who had a parasite in him — was finally subdued after a number of stun blasts from phasers. Were Picard and Riker only trying to sufficiently stun Remmick, so that the parasites could be removed from him and then destroyed? Or were they intentionally trying to kill him?