the cop tells the guy to stop and the guy walks away. more than that, the guys hands go towards his pockets which is bad.
i think the cop should have explained what was happening better. and even pulling the taser may have been premature. but these guys work alone and i won't second guess. i would assume that the officer's actions were proper by the letter of his depts procedures. he was not being complied with and this guy was moving in a furtive manner.
“why would he be read his miranda rights? there was no basis for miranda here. this guy watches too much TV.”
Because he was being arrested.
Ironically, if the speeder had pulled a knife or gun when he went for his pockets, we’d all be bitching and arguing about how the cop screwed up because he didn’t control the situation. But since it turned out he was unarmed, the cop is a power-drunk nazi.