These 5G picocells are phased antenna arrays that can perform beamforming with pinpoint directed energy. And they are coupled with Software Defined Radios that can be remotely upgraded with firmware updates.
Hitler almost took over the world, and we have significantly more advanced technology available to us these days since World War II. Depending on the RF front end of these picocells, what's to stop some potential next world dictator from turning all of these picocells into a global active denial system to prevent riots and civil unrest - because provably 95Ghz is already being used for ADS - especially if the picocell output power can be controlled via firmware update?
So here's your question back to you: how much output power are these picocells actually capable of?
And with active beamforming capability, what's to stop a government from turning these picocells into highly directional ADS nodes to prevent riots and protests?
These things are popping up next to tunnels and public transit ingress/egress in NYC, and public officials are refusing to comment on what they are being used for other than "it's something to do with Homeland Security":
https://newyork.cbslocal.com/2017/09/27/mysterious-metal-tow...
All of this SDR-enabled 5G picocell gear from all vendors need to go through extensive teardown analysis from the technical community, to determine what amplifier components are being used. China wouldn't think for two seconds about rolling out that type of capability in their country to prevent civil unrest, and having remotely-upgradable amplifiers on every light pole that provably can interact with human tissue doesn't sound like a fun future to me.