"It takes a remarkable force to keep nearly a million people quietly indoors for an entire day, home from work and school, from neighborhood errands and out-of-town travel. It takes a remarkable force to keep businesses closed and cars off the road, to keep playgrounds empty and porches unused across a densely populated place 125 square miles in size. This happened … not because armed officers went door-to-door, or imposed a curfew, or threatened martial law. All around the region, for 13 hours, people locked up their businesses and 'sheltered in place' out of a kind of collective will. The force that kept them there wasn't external – there was virtually no active enforcement across the city of the governor's plea that people stay indoors. Rather, the pressure was an internal one – expressed as concern, or helpfulness, or in some cases, fear – felt in thousands of individual homes."—Journalist Emily Badger, "The Psychology of a Citywide Lockdown"

It has become way too easy to lockdown this nation.

Five years ago, the city of Boston was locked down while police carried out a military-style manhunt for suspects in the 2013 Boston Marathon explosion. 

Four years ago, the city of Ferguson, Missouri, was locked down, with government officials deploying a massive SWAT team, an armored personnel carrier, men in camouflage pointing heavy artillery at the crowd, smoke bombs and tear gas to quell citizen unrest over a police shooting of a young, unarmed black man.

Three years ago, the city of Baltimore was put under a military-enforced lockdown after civil unrest over police brutality erupted into rioting. More than 1,500 national guard troops were deployed while residents were ordered to stay inside their homes and put under a 10 pm curfew.

This year, it was my hometown of Charlottesville, Va., population 50,000, that was locked down while government officials declared a state of emergency and enacted heightened security measures tantamount to martial law, despite the absence of any publicized information about credible threats to public safety.

As Tess Owen reports for Vice:

One year after white supremacists paraded through the streets, the face of downtown Charlottesville was transformed once again – this time with checkpoints, military-style camps for National Guard, and state police on every corner. When residents woke up Saturday, all entrances to the downtown mall were blocked off, apart from two checkpoints, where police looked through people's bags for lighters, knives or any other weapons. Up above, standing atop a building site, two national guard members photographed the individuals coming in and out… A National Guard encampment was set up in McGuffey Park, between the children's playground and the basketball court, where about 20 military police officers in camouflage were snoozing in the shade of some trees. A similar encampment was set up a few blocks away.

More details from journalist Ned Oliver:

Downtown Charlottesville felt like the green zone of a war-torn city Saturday. More than a thousand local and state police officers barricaded 10 blocks of the city's popular pedestrian district, the Downtown Mall, to prepare for the one-year anniversary of the white supremacist rally last year that left dozens injured and one dead. To enter, people had to submit to bag checks and searches at one of two checkpoints… Preparations aside, unlike last year, no white supremacist groups had said they were going to visit the city, and, by week's end, none had. Instead, it was a normal day on the mall except for the heavy security, a military helicopter constantly circling overhead, and hundreds of police officers milling around.

Make no mistake, this was a militarized exercise in intimidation, and it worked only too well.

For the most part, the residents of this city—once home to Thomas Jefferson, the nation's third president, author of the Declaration of Independence, and champion of the Bill of Rights—welcomed the city-wide lockdown, the invasion of their privacy, and the dismantling of every constitutional right intended to serve as a bulwark against government abuses.