I'd like to address the issue of police and nametags, versus displaying a badge number, or other more anonymous identifier, or alias, on their uniform.
I can speak to health care workers, as that's my profession. Pretty much across the board health care workers now display a nametag with a first name only, or first name and a last initial. Some of my colleagues are using on the job alias nick names. For example, they use something like Suzy T. on their nametag, when their name is Elizabeth Suzanne Trent. Why the secrecy? Well, increasingly health care providers are being stalked outside of work, and targeted by patients, and family members and friends of patients. There have been emergency room personnel being targeted by gang members for trying to save the life of a rival gang member who was shot, stabbed, or otherwise gravely injured. Safety for health care workers to do their jobs free of the fear of being stalked and targeted outside of work is a serious and evolving problem.
I don't blame cops for not displaying their full name when engaged in policing on the job, but I do think they should be able to conceal their identities legally. (Especially when involved with riot control!)I think it should be their right to use an on-the-job alias, or display a badge number that perhaps rotates to a different number every so often, to protect themselves AND their families, friends, and neighbors from becoming targets for revenge and further stalking and violence. We as a society OWE them this tiny buffer level of safety, IMO, so that they can do their jobs and go home alive. This isn't Mayberry anymore. It's really, really, really dangerous to be a cop in crime ridden areas.
Even when I was in the military, there is a policy of removing shiny officer rank and name tags in combat zones, to protect command and control from becoming targets. Riots are no less a combat environment than any war zone. Enlisted don't have to salute officers in war zones, to prevent officers from being identified. Riots are civilian terrorism, and should be treated as such. And I'm not talking about peaceful protests, I'm talking about full blown riot mob violence, burning, looting, lobbing improvised explosives at police, like we saw in Ferguson.