Not only do I think it looks like a taser, it also looks like he walked up and screamed for the unconscious/dead man to put his hands behind his back, several times, quite loudly. You know, for theater.
cuffing the suspect is standard procedure, it doesn’t matter if they think he’s dead, he gets the cuffs.
at the Miami Shootout, two fbi agents were killed and one was seriously wounded by a suspect with “non-survivable” bullet wounds. Michael Platt was unconscious, but then he ‘woke up” and shot 3 more people.
i posted a picture of a police taser and sunglasses in 24. can you honestly say that what Slager threw down beside Scott looks more like the sunglasses than the taser?