Holder wants the bracelets because too many Obama Voters are getting shot during their attempts at mugging, raping, house breaking and playing the Knockout Game.
When bracelets are mandatory for law abiding citizens packing heat, Holders People will know who is defenceless and who to avoid.
The next increment will be that your bracelet must be visible at all times. It will be a crime if it is not clearly visible. That way everyone will know who is carrying. This is another slippery slope.