"... [T] hey are going to concentrate their energy in narrow, steerable high-power beams. The arrays are going to track each other, so that wherever you are, a beam from your smartphone is going to be aimed directly at the base station (cell tower), and a beam from the base station is going to be aimed directly at you. If you walk between someone's phone and the base station, both beams will go right through your body. The beam from the tower will hit you even if you are standing near someone who is on a smartphone. And if you are in a crowd, multiple beams will overlap and be unavoidable.
"[The radiation] penetrates much deeper into the human body and the assumptions that the FCC's exposure limits are based on do not apply... When an ordinary electromagnetic field enters the body, it causes charges to move and currents to flow. But when extremely short electromagnetic pulses enter the body, something else happens: the moving charges themselves become little antennas that re-radiate the electromagnetic field and send it deeper into the body. These re-radiated waves are called Brillouin precursors. They become significant when either the power or the phase of the waves changes rapidly enough. 5G will probably satisfy both requirements.... Base stations have to be very close together--100 meters apart in cities--and they have to blast out their signals in order to get them inside homes and buildings. And the only way to do this economically is with phased arrays and focused beams that are aimed directly at their targets. What happens to birds that fly through the beams, the FCC does not say... And who is going to protect all the bystanders from radiation that is coming in their direction that is ten times as strong as it used to be?"
This experiment at the Olympics is being conducted without any informed consent.
In October, an appeal to the European Union to halt 5G was signed by over 200 research scientists and physicians. An article in the Santa Clara County Medical Society Bulletin detailed some of the research on the millimeter waves of 5G and why it is imperative to pay attention. Dr. Cindy Russell told the FCC:
"The accumulated science of harm from wireless microwave radiation however has confirmed adverse biological and clinical effects. The biological and cellular effects include damage to DNA and mitochondria, stress-protein synthesis, cellular damage to neurons, immune dysfunction, creation of reactive-oxygen species, reduced melatonin, alternation of nerve-cell junction." 
Retired U.S. government physicist Ron Powell says, "This growing understanding of the adverse health effects of cellular radiation means that the expansion of cellular technology should be HALTED." 
Researcher Martin Pall told California legislators in 2017:
"It would be a disaster for the health of Californians to be exposed to the antennas envisioned in SB.649. The State of California would be making a grave mistake to proceed... Legislators would best pause to understand the gravity of the biological effects, and the ramifications for physical and mental health, as well as consequences from continual damage to human DNA, and learn the facts from scientists who are independent of the wireless industry, not from the industry lobbyists who have a gigantic conflict of interest.
"Higher-frequency electromagnetic fields from 5G technologies on the horizon pose even greater biological concern than those to which we are exposed today. We should be moving, instead, to wired technologies at every opportunity, based on what we know in science today, not expanding and supporting the proliferation of wireless."
Former FCC Chairman Tom Wheeler ignored the experts, explaining the FCC's approach :
"... It's a simple formula: Lead the world in spectrum availability, encourage and protect innovation-driving competition, and stay out of the way of technological development.