You mean smartphones.
Try and use a little common sense. You think a criminal is going to see you taking out your phone, hold it up to record him and he's going to smile for the camera? Get a clue, troll. He'll steal it and maybe assault you for good measure.
You need something smaller and inconspicuous that is constantly recording.
Could you make an attempt to conceal your trolling, stupidity and anti-white racism?
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There's no doubt it would help the police more than anything, as they have evidence to disprove a majority of the false complaints against them.
Problem is, the criminals and their enablers will complain about that too. Look what happened when they released video footage of Michael Brown stealing and assaulting the store clerk. Suddenly the "unarmed teen," the "gentle giant," the "college-bound, respectful guy" was shown to be a criminal punk... and they said it was so wrong to show that. They don't want you to see the truth, they don't like any evidence that contradicts their victimhood narrative.