Ethics aside, I think a complete lockdown is impractical in the US, for reasons like this.
"Thousands of motorcycle enthusiasts flooded a small South Dakota town for the 80th iteration of the annual Sturgis Motorcycle Rally that, despite the continuing coronavirus pandemic and outbreaks in South Dakota, is expected to draw 250,000 attendees over 10 days for riding and live music—no face mask required, and little social distancing to be seen."
"Thousands of motorcycle enthusiasts flooded a small South Dakota town for the 80th iteration of the annual Sturgis Motorcycle Rally that, despite the continuing coronavirus pandemic and outbreaks in South Dakota, is expected to draw 250,000 attendees over 10 days for riding and live music—no face mask required, and little social distancing to be seen."